:root {
    /* Dark Theme (Default) */
    --bg-main: radial-gradient(circle at top, rgba(33, 211, 255, 0.18), transparent 45%),
                 radial-gradient(circle at 20% 20%, rgba(255, 0, 128, 0.25), transparent 40%),
                 radial-gradient(circle at 80% 0%, rgba(111, 76, 255, 0.45), transparent 50%),
                 #260c2b;
    --panel: rgba(12, 15, 32, 0.7);
    --panel-strong: rgba(24, 27, 51, 0.85);
    --text: #F2F4FF;
    --muted: #9AA1C7;
    --accent-1: #21D3FF;
    --accent-2: #FF2D92;
    --accent-3: #6F4CFF;
    --accent-4: #00F5A0;
    --success: #4ADE80;
    --danger: #FB7185;
    --grid-line: rgba(255, 255, 255, 0.00);
    --shadow-color: rgba(0,0,0,0.2);
    --shadow-strong: rgba(0,0,0,0.35);
    --glass-border: rgba(255,255,255,0.08);
    --hero-gradient: linear-gradient(135deg, rgba(33,211,255,0.18), rgba(111,76,255,0.25));
    --nav-bg: rgba(5,6,14,0.55);
}

[data-theme="light"] {
    --bg-main: radial-gradient(circle at top, rgba(147, 197, 253, 0.22), transparent 70%),
                 radial-gradient(circle at 25% 40%, rgba(196, 181, 253, 0.18), transparent 65%),
                 radial-gradient(circle at 75% 20%, rgba(167, 139, 250, 0.16), transparent 60%),
                 radial-gradient(circle at 50% 80%, rgba(167, 139, 250, 0.12), transparent 55%),
                 #E8EBF0;
    --panel: #F4F6F9;
    --panel-strong: #FFFFFF;
    --text: #1A1D2B;
    --muted: #64748B;
    --grid-line: rgba(0, 0, 0, 0.00);
    --glass-border: rgba(255,255,255,1);
    --hero-gradient: linear-gradient(135deg, rgba(191, 219, 254, 0.7), rgba(221, 214, 254, 0.5));
    --nav-bg: rgba(255,255,255,0.85);
}

/* Light Mode Specific Overrides for Realistic 3D Shadows */
[data-theme="light"] .nav {
    box-shadow: 3px 3px 4px rgba(100, 116, 139, 0.42);
}

[data-theme="light"] .hero-left,
[data-theme="light"] .hero-right {
    background: var(--panel);
    box-shadow: 12px 12px 14px rgba(100, 116, 139, 0.45);
}

[data-theme="light"] .data-card {
    box-shadow: 8px 8px 10px rgba(100, 116, 139, 0.42);
}

[data-theme="light"] .metric-card {
    background: #F4F6F9;
    box-shadow: 2px 2px 3px rgba(100, 116, 139, 0.38);
}

[data-theme="light"] .metric-grid .metric-card:nth-child(1) {
    background: linear-gradient(135deg, #DEE9FF 0%, #F5F8FF 100%);
}

[data-theme="light"] .metric-grid .metric-card:nth-child(2) {
    background: linear-gradient(135deg, #F0E6FF 0%, #F8EEFF 100%);
}

[data-theme="light"] .metric-grid .metric-card:nth-child(3) {
    background: linear-gradient(135deg, #E4F6FF 0%, #F1FAFF 100%);
}

[data-theme="light"] .metric-grid .metric-card:nth-child(4) {
    background: linear-gradient(135deg, #FFE9F6 0%, #F8F0FF 100%);
}

/* Fix updated-at timestamp visibility in light mode */
[data-theme="light"] .updated-at {
    color: #64748B !important;
}

/* Adjust text gradients for light mode readability */
[data-theme="light"] .hero-title {
    background: linear-gradient(to right, #1e293b, #475569);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .floating-orb {
    opacity: 0.6;
    background: radial-gradient(circle, rgba(255,255,255,0.8), transparent 70%);
    filter: blur(40px);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    min-height: 100vh;
    background: var(--bg-main);
    color: var(--text);
    overflow-x: hidden;
    position: relative;
    transition: background 0.3s ease, color 0.3s ease;
}

header {
    padding: 1.5rem 0;
}

.container {
    width: min(1400px, 92vw);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.container.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    border: none;
    border-radius: 999px;
    padding: 0.6rem 1.5rem;
    backdrop-filter: blur(18px);
    background: var(--nav-bg);
    box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.5);
    transform: translateZ(0);
    position: relative;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Desktop: nav-row-1 is flex, nav-row-2 hidden */
.nav-row-1 {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-row-2 {
    display: none;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Nav expand button - hidden on desktop */
.nav-expand-btn {
    display: none;
}

/* Auto-Refresh Control */
.auto-refresh-control {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.6rem;
    border-radius: 8px;
    background: #2a2b50;
    overflow: hidden;
    transition: all 0.3s ease;
}

.auto-refresh-control.active {
    border-color: var(--success);
    animation: refresh-pulse 4s infinite ease-in-out;
}

@keyframes refresh-pulse {
    0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
    50% { box-shadow: 0 0 8px 2px rgba(74, 222, 128, 0.3); }
    100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

.refresh-progress {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 100%;
    background: linear-gradient(90deg, rgba(74, 222, 128, 0.15), rgba(74, 222, 128, 0.25));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.1s linear;
    pointer-events: none;
    z-index: 0;
}

.auto-refresh-control.active .refresh-progress {
    transform: scaleX(1);
}

.refresh-toggle {
    position: relative;
    z-index: 1;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.3rem;
    border-radius: 4px;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
    font-size: 0.85rem;
}

.refresh-label {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.refresh-toggle:hover {
    color: var(--text);
}

.auto-refresh-control.active .refresh-toggle {
    color: var(--success);
}

.auto-refresh-control.active .refresh-toggle i {
    animation: spin 2s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.refresh-input {
    position: relative;
    z-index: 1;
    width: 2.5rem;
    padding: 0.2rem 0.3rem;
    border: none;
    border-radius: 4px;
    background: rgba(255,255,255,0.1);
    color: var(--text);
    font-size: 0.8rem;
    font-family: 'Oxanium', monospace;
    text-align: center;
    -moz-appearance: textfield;
}

.refresh-input::-webkit-outer-spin-button,
.refresh-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.refresh-input:focus {
    outline: none;
    background: rgba(255,255,255,0.15);
}

.refresh-unit {
    position: relative;
    z-index: 1;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.65rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

[data-theme="light"] .auto-refresh-control {
    background: rgba(0,0,0,0.03);
    border-color: rgba(0,0,0,0.1);
}

[data-theme="light"] .refresh-input {
    background: rgba(0,0,0,0.05);
}

[data-theme="light"] .refresh-input:focus {
    background: rgba(0,0,0,0.08);
}

/* Theme Switcher */
.theme-switch {
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: center;
    padding: 0.5rem;
    border-radius: 50%;
    color: var(--muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 1rem;
}

.theme-switch i {
    width: 1rem;
    text-align: center;
}

.theme-switch:hover {
    color: var(--text);
    background: rgba(255,255,255,0.1);
}

[data-theme="light"] .theme-switch:hover {
    background: rgba(0,0,0,0.05);
}

.brand {
    font-family: 'Oxanium', cursive;
    font-weight: 600;
    font-size: 1.3rem;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    line-height: 2;
    padding-top: 4px;
    font-size: 1.45rem;
}

.status-chip {
    display: inline-flex;
    gap: 0.4rem;
    align-items: center;
    font-size: 0.85rem;
    color: var(--muted);
    padding-left: 1rem;
    border-left: 1px solid var(--glass-border);
}

[data-theme="light"] .status-chip {
    border-left: 1px solid rgba(100, 116, 139, 0.45);
}

.status-chip .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
    animation: pulse 4s infinite ease-in-out;
    margin: 1px 5px 1px 0px;
}

@keyframes pulse {
    0% { opacity: 0.25; transform: scale(1.00); }
    50% { opacity: 1; transform: scale(1.05); }
    100% { opacity: 0.25; transform: scale(1.00); }
}

.hero {
    margin-top: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    align-items: stretch;
}

/* Stack hero cards when assets go 2-wide */
@media (max-width: 992px) {
    .hero {
        grid-template-columns: 1fr;
    }
}

.hero-left {
    padding: 2.5rem;
    border-radius: 32px;
    background: var(--hero-gradient);
    border: none;
    box-shadow: 12px 12px 16px rgba(0, 0, 0, 0.55);
    position: relative;
    overflow: hidden;
    transform: translateZ(0);
    transition: box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
}


.hero-left::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top left, rgba(255,255,255,0.15), transparent 60%);
    pointer-events: none;
}

.hero-title {
    font-family: 'Oxanium', cursive;
    font-size: 2.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, var(--text), var(--muted));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    color: var(--muted);
    margin-bottom: 2rem;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: auto;
}

/* Mobile: Single column for metric grid */
@media (max-width: 768px) {
    .metric-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.metric-card {
    border-radius: 20px;
    padding: 1.65rem 1.25rem;
    background: var(--panel);
    border: none;
    box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    transform: translateZ(0);
    position: relative;
    transition: box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}


.metric-card span {
    display: block;
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 0.4rem;
}

.metric-card strong {
    font-size: 1.5rem !important;
    line-height: 1.1 !important;
    word-wrap: break-word;
    display: inline !important;
    max-height: none !important;
    overflow: visible !important;
    white-space: nowrap !important;
}

.metric-card strong span {
    font-size: inherit !important;
    line-height: inherit !important;
    display: inline !important;
}

.metric-card strong small {
    font-size: 0.9rem !important;
    color: var(--muted) !important;
    margin-left: 0.3rem;
    font-weight: normal;
    vertical-align: middle;
    display: inline !important;
}

.metric-card .positive {
    color: #86efac; /* subtle green */
}

.metric-card .negative {
    color: #fca5a5; /* subtle red */
}

[data-theme="light"] .metric-card .positive {
    color: #22c55e; /* slightly darker green for light theme */
}

[data-theme="light"] .metric-card .negative {
    color: #ef4444; /* slightly darker red for light theme */
}

.hero-right {
    border-radius: 32px;
    padding: 2rem;
    background: var(--panel-strong);
    border: none;
    box-shadow: 12px 12px 16px rgba(0, 0, 0, 0.55);
    transform: translateZ(0);
    position: relative;
    transition: box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}


.hero-right h3 {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--muted);
}

.hero-right h2 {
    font-size: 2.75rem;
    margin-top: 0.5rem;
    margin-bottom: 1rem;
}

/* Calculator Styles */
.calculator-panel {
    display: flex;
    flex-direction: column;
}

.calculator-panel h2 {
    font-size: 1.8rem;
    margin-bottom: 0.75rem;
}

.calculator-panel h3 {
    margin-bottom: 1rem;
}

.tools-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.tools-header h3 {
    margin-bottom: 0;
}

.tool-reset-btn {
    background: transparent;
    border: none;
    color: #888;
    font-size: 1rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    visibility: hidden;
    opacity: 0;
}

.tool-reset-btn.visible {
    visibility: visible;
    opacity: 0.7;
}

.tool-reset-btn:hover {
    color: #ccc;
    background: rgba(255,255,255,0.1);
    opacity: 1;
}

[data-theme="light"] .tool-reset-btn {
    color: #666;
}

[data-theme="light"] .tool-reset-btn:hover {
    color: #333;
    background: rgba(0,0,0,0.1);
}

.calc-tabs {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.calc-content {
    display: none;
    flex-direction: column;
    flex: 1;
    min-height: 300px;
}

.calc-content.active {
    display: flex;
}

.calc-tab {
    flex: 1;
    padding: 0.5rem 0.4rem;
    border: none;
    border-radius: 8px;
    background: rgba(255,255,255,0.08);
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    min-width: fit-content;
    white-space: nowrap;
}

.calc-tab:hover {
    background: rgba(255,255,255,0.12);
    color: var(--text);
}

.calc-tab.active {
    background: #401f3c;
    color: #f0d4e8;
}

[data-theme="light"] .calc-tab {
    background: rgba(0,0,0,0.06);
}

[data-theme="light"] .calc-tab:hover {
    background: rgba(0,0,0,0.1);
}

[data-theme="light"] .calc-tab.active {
    background: #9b4d7a;
    color: #fff;
}

.calc-row {
    margin-bottom: 0.6rem;
}

.calc-row-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 0.6rem;
}

.calc-row-half label {
    display: block;
    font-size: 0.75rem;
    color: var(--muted);
    margin-bottom: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.calc-row-half .calc-select,
.calc-row-half .calc-input {
    width: 100%;
}

.calc-row label {
    display: block;
    font-size: 0.75rem;
    color: var(--muted);
    margin-bottom: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.calc-select,
.calc-input {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(0,0,0,0.2);
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color 0.2s ease, background 0.2s ease;
}

[data-theme="light"] .calc-select,
[data-theme="light"] .calc-input {
    background: rgba(255,255,255,0.8);
    border-color: rgba(0,0,0,0.15);
}

.calc-select:focus,
.calc-input:focus {
    outline: none;
    border-color: #9b4d7a;
}

.calc-select option,
.calc-select optgroup {
    background: #1a1d2e;
    color: var(--text);
}

.calc-unit-select option {
    background: #1a1d2e;
    color: var(--text);
}

[data-theme="light"] .calc-select option,
[data-theme="light"] .calc-select optgroup,
[data-theme="light"] .calc-unit-select option {
    background: #ffffff;
    color: #1e293b;
}

.calc-input-group {
    display: flex;
    gap: 0.5rem;
}

.calc-input-group .calc-input {
    flex: 1;
    min-width: 0;
}

/* Compact convert group for 3 elements in one row */
.calc-convert-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.calc-select-sm {
    flex: 2;
    min-width: 0;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(0,0,0,0.2);
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
}

.calc-input-sm {
    flex: 1;
    min-width: 60px;
    padding: 0.6rem 0.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(0,0,0,0.2);
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    text-align: center;
}

.calc-unit-select-sm {
    flex: 1;
    min-width: 70px;
    padding: 0.6rem 0.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(0,0,0,0.2);
    color: var(--text);
    font-size: 0.85rem;
    font-family: inherit;
}

/* Dark mode dropdown fix for compact elements */
.calc-select-sm option,
.calc-unit-select-sm option {
    background: #1e1e2e;
    color: var(--text);
}

.calc-select-sm optgroup {
    background: #1e1e2e;
    color: var(--muted);
}

[data-theme="light"] .calc-select-sm,
[data-theme="light"] .calc-input-sm,
[data-theme="light"] .calc-unit-select-sm {
    background: rgba(255,255,255,0.8);
    border-color: rgba(0,0,0,0.15);
}

[data-theme="light"] .calc-select-sm option,
[data-theme="light"] .calc-unit-select-sm option {
    background: #ffffff;
    color: #1e293b;
}

[data-theme="light"] .calc-select-sm optgroup {
    background: #ffffff;
    color: #64748b;
}

.calc-select-sm:focus,
.calc-input-sm:focus,
.calc-unit-select-sm:focus {
    outline: none;
    border-color: #9b4d7a;
}

/* Swap button (inline with To row) */
.calc-swap-btn {
    flex-shrink: 0;
    background: rgba(155, 77, 122, 0.3);
    border: 1px solid rgba(155, 77, 122, 0.5);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #e8cfe1;
    transition: all 0.2s ease;
    margin-left: 5px;
}

.calc-swap-btn:hover {
    background: rgba(155, 77, 122, 0.5);
    transform: scale(1.1);
}

.calc-swap-btn:active {
    transform: scale(0.95);
}

[data-theme="light"] .calc-swap-btn {
    background: rgba(124, 58, 94, 0.15);
    border-color: rgba(124, 58, 94, 0.3);
    color: #7c3a5e;
}

[data-theme="light"] .calc-swap-btn:hover {
    background: rgba(124, 58, 94, 0.25);
}

.calc-purity-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.calc-slider {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255,255,255,0.15);
    border-radius: 3px;
    cursor: pointer;
}

.calc-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #9b4d7a;
    cursor: pointer;
    border: 2px solid #e8cfe1;
}

.calc-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #9b4d7a;
    cursor: pointer;
    border: 2px solid #e8cfe1;
}

[data-theme="light"] .calc-slider {
    background: rgba(0,0,0,0.15);
}

[data-theme="light"] .calc-slider::-webkit-slider-thumb {
    background: #7c3a5e;
    border-color: #fff;
}

[data-theme="light"] .calc-slider::-moz-range-thumb {
    background: #7c3a5e;
    border-color: #fff;
}

.calc-purity-input {
    width: 80px;
    padding: 0.6rem 0.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(0,0,0,0.2);
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    text-align: center;
}

[data-theme="light"] .calc-purity-input {
    background: rgba(255,255,255,0.8);
    border-color: rgba(0,0,0,0.15);
}

.calc-purity-input:focus {
    outline: none;
    border-color: #9b4d7a;
}

.calc-unit-select {
    width: auto;
    min-width: 90px;
    padding: 0.6rem 0.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(0,0,0,0.2);
    color: var(--text);
    font-size: 0.85rem;
    font-family: inherit;
}

[data-theme="light"] .calc-unit-select {
    background: rgba(255,255,255,0.8);
    border-color: rgba(0,0,0,0.15);
}

.calc-unit-select:focus {
    outline: none;
    border-color: #9b4d7a;
}

.calc-result {
    margin-top: auto;
    padding: 1rem;
    background: rgba(124, 58, 94, 0.25);
    border-radius: 12px;
    border: 1px solid rgba(155, 77, 122, 0.35);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
}

/* Calculate Value tab - taller result box */
#calc-value .calc-result {
    padding: 1.65rem 1rem;
    min-height: 100px;
}

#calc-value .calc-result-label,
#calc-value .calc-result-rate {
    font-size: 0.9rem;
}

/* Convert tab - larger result box with room for from + USD + result */
#calc-convert .calc-result {
    padding: 1.5rem 1rem;
    min-height: 140px;
}

#calc-convert .calc-result-rate {
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 0.5rem;
}

#calc-convert .calc-result-label {
    font-size: 1.2rem;
    font-weight: 600;
    color: #e8e0e6;
    text-transform: none;
    letter-spacing: 0;
    margin-bottom: 0.25rem;
    font-family: 'Oxanium', monospace;
}

#calc-convert .calc-result-value {
    font-size: 1.8rem;
}

[data-theme="light"] #calc-convert .calc-result-label {
    color: #7c3a5e;
}

/* Actual Weight tab - compact result box with inline label */
#calc-purity .calc-result {
    padding: 1rem;
    min-height: auto;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

#calc-purity .calc-result-label {
    display: inline;
    margin-bottom: 0;
    font-size: 1.8rem;
    font-weight: 700;
    color: #e8e0e6;
    font-family: 'Oxanium', monospace;
    text-transform: none;
    letter-spacing: 0;
}

#calc-purity .calc-result-value {
    display: block;
}

#calc-purity .calc-result-value-sm {
    display: inline;
    font-size: 1.5rem;
}

#calc-purity #purity-result {
    font-size: 1.35rem;
}

.purity-weight-line {
    display: block;
}

#calc-purity .calc-result-label {
    display: inline;
    font-size: 1.35rem;
    font-weight: 700;
    color: #e8e0e6;
    font-family: 'Oxanium', monospace;
    text-transform: none;
    letter-spacing: 0;
    margin: 0;
}

[data-theme="light"] #calc-purity .calc-result-label {
    color: #7c3a5e;
}

#purity-value {
    display: block;
    margin-bottom: 0.15rem;
}

[data-theme="light"] .calc-result {
    background: rgba(155, 77, 122, 0.12);
    border-color: rgba(124, 58, 94, 0.25);
}

.calc-result-label {
    display: block;
    font-size: 0.7rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.25rem;
}

.calc-result-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: #e8e0e6;
    font-family: 'Oxanium', monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
}

[data-theme="light"] .calc-result-value {
    color: #7c3a5e;
}

.calc-result-rate {
    display: block;
    font-size: 0.7rem;
    color: var(--muted);
    margin-top: 0.25rem;
}

/* Coin Values Tool */
.coin-label-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.3rem;
}

.coin-label-row label {
    font-size: 0.75rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.qty-label {
    width: 80px;
    text-align: left;
}

.coin-search-group {
    position: relative;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.coin-search-input {
    flex: 1;
    min-width: 200px;
}

.coin-qty-input {
    width: 80px;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(0,0,0,0.2);
    color: var(--text);
    font-size: 0.95rem;
    text-align: center;
}

[data-theme="light"] .coin-qty-input {
    background: rgba(255,255,255,0.8);
    border-color: rgba(0,0,0,0.15);
}

.coin-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 70px;
    background: #1e1e2e;
    border: 1px solid rgba(155, 77, 122, 0.4);
    border-radius: 8px;
    margin-top: 4px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.coin-suggestions.active {
    display: block;
}

[data-theme="light"] .coin-suggestions {
    background: #ffffff;
    border-color: rgba(124, 58, 94, 0.3);
}

.coin-suggestion {
    padding: 0.6rem 0.75rem;
    cursor: pointer;
    border-bottom: 1px solid rgba(155, 77, 122, 0.2);
    transition: background 0.15s;
}

.coin-suggestion:last-child {
    border-bottom: none;
}

.coin-suggestion:hover {
    background: rgba(155, 77, 122, 0.2);
}

.coin-suggestion-name {
    font-weight: 600;
    color: var(--text);
}

.coin-suggestion-info {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 2px;
}

/* Coin result area */
.coin-result {
    min-height: 140px;
    padding: 1rem !important;
    overflow: visible !important;
}

.coin-result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--muted);
    height: 100%;
    min-height: 100px;
}

.coin-result-placeholder i {
    font-size: 2rem;
    opacity: 0.5;
}

.coin-result-details {
    text-align: left;
    overflow: visible;
}

.coin-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: #e8e0e6;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(155, 77, 122, 0.3);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.coin-years {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--muted);
}

[data-theme="light"] .coin-name {
    color: #7c3a5e;
}

.coin-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.4rem 1rem;
    margin-bottom: 0.75rem;
    overflow: visible;
}

.coin-spec {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    overflow: visible;
}

.spec-label {
    color: var(--muted);
}

.spec-label.has-tooltip {
    cursor: help;
    position: relative;
    border-bottom: 1px dotted var(--muted);
}

.spec-label.has-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: #1a1a2e;
    color: #e8e0e6;
    padding: 0.6rem 0.8rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 400;
    line-height: 1.4;
    white-space: normal;
    width: max-content;
    max-width: 220px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    border: 1px solid rgba(155, 77, 122, 0.3);
}

.spec-label.has-tooltip::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: #1a1a2e;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.spec-label.has-tooltip:hover::after,
.spec-label.has-tooltip:hover::before {
    opacity: 1;
    visibility: visible;
}

[data-theme="light"] .spec-label.has-tooltip::after {
    background: #fff;
    color: #4a3347;
    border-color: rgba(124, 58, 94, 0.25);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

[data-theme="light"] .spec-label.has-tooltip::before {
    border-top-color: #fff;
}

.spec-value {
    color: var(--text);
    font-weight: 500;
}

.coin-melt {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(155, 77, 122, 0.3);
}

.melt-label {
    font-size: 0.9rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.melt-label.has-tooltip {
    cursor: help;
    position: relative;
    border-bottom: 1px dotted var(--muted);
}

.melt-label.has-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    background: #1a1a2e;
    color: #e8e0e6;
    padding: 0.6rem 0.8rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 400;
    line-height: 1.4;
    text-transform: none;
    letter-spacing: 0;
    white-space: normal;
    width: max-content;
    max-width: 220px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    border: 1px solid rgba(155, 77, 122, 0.3);
}

.melt-label.has-tooltip::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 20px;
    border: 6px solid transparent;
    border-top-color: #1a1a2e;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.melt-label.has-tooltip:hover::after,
.melt-label.has-tooltip:hover::before {
    opacity: 1;
    visibility: visible;
}

[data-theme="light"] .melt-label.has-tooltip::after {
    background: #fff;
    color: #4a3347;
    border-color: rgba(124, 58, 94, 0.25);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

[data-theme="light"] .melt-label.has-tooltip::before {
    border-top-color: #fff;
}

.melt-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #e8e0e6;
    font-family: 'Oxanium', monospace;
}

[data-theme="light"] .melt-value {
    color: #7c3a5e;
}

.cards-grid {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
}

@media (max-width: 1400px) {
    .cards-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 992px) {
    .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 600px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

.data-card {
    padding: 1.6rem;
    border-radius: 24px;
    background: var(--panel);
    border: none;
    box-shadow: 8px 8px 12px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    transform: translateZ(0);
    transition: box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.data-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.08) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 0;
}

.data-card:hover::after {
    opacity: 1;
}

.market-paused {
    opacity: 0.9;
}

.data-card > * {
    position: relative;
    z-index: 1;
}

[data-theme="light"] .data-card {
    background: #F4F6F9;
    box-shadow: 8px 8px 10px rgba(100, 116, 139, 0.25);
}

[data-theme="light"] .data-card::after {
    background: linear-gradient(135deg, rgba(241,250,255,0) 0%, rgba(209,233,255,0.50) 25%, rgba(255,223,246,0.50) 100%);
}

[data-theme="light"] .data-card:hover {
    background: #F4F6F9;
    box-shadow: 8px 8px 12px rgba(100, 116, 139, 0.28);
}

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.asset-name {
font-size: 1.1rem;
font-weight: 600;
}

.resume-hint {
font-size: 0.75rem;
color: var(--muted);
}

.market-status-pill {
font-size: 0.72rem;
text-transform: uppercase;
letter-spacing: 0.8px;
padding: 0.15rem 0.65rem;
border-radius: 999px;
background: rgba(255,255,255,0.1);
color: var(--text);
border: 1px solid rgba(255,255,255,0.2);
}

[data-theme="light"] .market-status-pill {
background: rgba(15,23,42,0.05);
color: var(--text);
border: 1px solid rgba(15,23,42,0.1);
}

.market-status-stale_paused {
background: rgba(255, 193, 7, 0.15);
border-color: rgba(255, 193, 7, 0.35);
color: #facc15;
}

.market-status-closed {
background: rgba(239, 68, 68, 0.15);
border-color: rgba(239, 68, 68, 0.4);
color: #f87171;
}

.market-status-maintenance {
background: rgba(59, 130, 246, 0.15);
border-color: rgba(59, 130, 246, 0.35);
color: #60a5fa;
}

.asset-meta {
font-size: 0.85rem;
color: var(--muted);
}

.price {
font-size: 2rem;
font-weight: 700;
}

.change {
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.sparkline {
    height: 60px;
    width: 100%;
}

.sparkline svg {
    width: 100%;
    height: 100%;
    overflow: visible;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

[data-theme="light"] .sparkline svg {
    filter: none;
}

.sparkline-path {
    stroke: var(--muted);
    stroke-linecap: round;
}

/* Sparkline Hover Tooltip */
.sparkline-tooltip {
    position: fixed;
    background: var(--panel-strong);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 0.75rem;
    font-family: 'Oxanium', monospace;
    color: var(--text);
    pointer-events: none;
    z-index: 1000;
    opacity: 0;
    transform: translateY(-5px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    max-width: 200px;
    word-wrap: break-word;
}

[data-theme="light"] .sparkline-tooltip {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.sparkline-tooltip.visible {
    opacity: 1;
    transform: translateY(0);
}

.sparkline-tooltip .tooltip-time {
    color: var(--muted);
    font-size: 0.7rem;
    margin-bottom: 2px;
}

.sparkline-tooltip .tooltip-price {
    font-weight: 600;
    font-size: 0.8rem;
}

.sparkline-tooltip .tooltip-asset {
    color: var(--text);
    opacity: 0.8;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

/* Sparkline Vertical Indicator */
.sparkline-indicator {
    position: absolute;
    top: 0;
    width: 1px;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
    z-index: 5;
}

.sparkline-indicator.visible {
    opacity: 1;
}

[data-theme="light"] .sparkline-indicator {
    background: rgba(0, 0, 0, 0.2);
}

.data-card[data-slug="gold"] .sparkline-path { stroke: #FFD700; } /* Gold */
.data-card[data-slug="silver"] .sparkline-path { stroke: #E0E0E0; } /* Bright Silver */
[data-theme="light"] .data-card[data-slug="silver"] .sparkline-path { stroke: #A0A0A0; } /* Darker Silver for light mode */
.data-card[data-slug="platinum"] .sparkline-path { stroke: #C8D6E5; } /* Platinum - cool blue-white */
[data-theme="light"] .data-card[data-slug="platinum"] .sparkline-path { stroke: #8A9BAD; }
.data-card[data-slug="palladium"] .sparkline-path { stroke: #D8CFC5; } /* Palladium - warm champagne */
[data-theme="light"] .data-card[data-slug="palladium"] .sparkline-path { stroke: #9E958B; }
.data-card[data-slug="copper"] .sparkline-path { stroke: #B87333; } /* Copper */
.data-card[data-slug="aluminum"] .sparkline-path { stroke: #B8E0E8; } /* Aluminum - cyan tint */
[data-theme="light"] .data-card[data-slug="aluminum"] .sparkline-path { stroke: #6A9BA3; }
.data-card[data-slug="nickel"] .sparkline-path { stroke: #9AA894; } /* Nickel - slight green undertone */
[data-theme="light"] .data-card[data-slug="nickel"] .sparkline-path { stroke: #6A7A64; }
.data-card[data-slug="bitcoin"] .sparkline-path { stroke: #F7931A; } /* Bitcoin Orange */
.data-card[data-slug="ethereum"] .sparkline-path { stroke: #627EEA; } /* Ethereum Blue */
.data-card[data-slug="xrp"] .sparkline-path { stroke: #00AAE4; } /* XRP Blue */
.data-card[data-slug="dogecoin"] .sparkline-path { stroke: #C2A633; } /* Dogecoin Gold */
.data-card[data-slug="litecoin"] .sparkline-path { stroke: #345D9D; } /* Litecoin Blue */
.data-card[data-slug="solana"] .sparkline-path { stroke: #9945FF; } /* Solana Purple */
.data-card[data-slug="cardano"] .sparkline-path { stroke: #3468D1; } /* Cardano Blue */
.data-card[data-slug="btc-gold-ratio"] .sparkline-path { stroke: #2DCCD3; } /* Teal */
.data-card[data-slug="silver-gold-ratio"] .sparkline-path { stroke: #FB4E83; } /* Pink */

.updated-at {
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: var(--muted);
}

.updated-at.has-tooltip {
    cursor: help;
    position: relative;
    width: fit-content;
    border-bottom: 1px dotted var(--muted);
}

.updated-at.has-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background: #1a1a2e;
    color: #e8e0e6;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 400;
    line-height: 1.4;
    white-space: pre;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    border: 1px solid rgba(155, 77, 122, 0.3);
}

.updated-at.has-tooltip::before {
    content: '';
    position: absolute;
    top: calc(100% + 2px);
    left: 20px;
    border: 6px solid transparent;
    border-bottom-color: #1a1a2e;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.updated-at.has-tooltip:hover::after,
.updated-at.has-tooltip:hover::before {
    opacity: 1;
    visibility: visible;
}

[data-theme="light"] .updated-at.has-tooltip::after {
    background: #fff;
    color: #4a3347;
    border-color: rgba(124, 58, 94, 0.25);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

[data-theme="light"] .updated-at.has-tooltip::before {
    border-bottom-color: #fff;
}

/* Tooltip z-index fix - hovered card comes to front */
.data-card:hover {
    z-index: 10;
}

.data-card {
    overflow: visible;
}

.badge {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    color: var(--muted);
}

footer {
    padding: 3rem 0;
    text-align: center;
    color: var(--muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--glass-border);
    margin-top: 2rem;
}

footer .container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.footer-copyright::after {
    content: '•';
    margin-left: 0.5rem;
}

@media (max-width: 480px) {
    footer .container {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .footer-copyright::after {
        display: none;
    }
    
    /* Mobile Header - Two Row Structure */
    .nav {
        display: flex;
        flex-direction: column;
        padding: 0.6rem 1rem;
        gap: 0.2rem;
        border-radius: 24px !important;
    }
    
    .nav-row-1 {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
    }
    
    .nav-right {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    
    /* Hide desktop-only items on mobile */
    .desktop-only {
        display: none !important;
    }
    
    /* Expand button - only visible on mobile */
    .nav-expand-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        background: rgba(255,255,255,0.1);
        border: none;
        border-radius: 8px;
        color: var(--text);
        cursor: pointer;
        transition: transform 0.3s ease, background 0.2s;
    }
    
    .nav-expand-btn:hover {
        background: rgba(255,255,255,0.15);
    }
    
    .nav-expand-btn.expanded {
        transform: rotate(-180deg);
    }
    
    /* Second row - hidden by default */
    .nav-row-2 {
        display: none;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        padding-top: 0;
        margin-top: 0.15rem;
        padding-bottom: 0.3rem;
    }
    
    .nav-row-2.visible {
        display: flex;
    }
    
    /* Remove divider on mobile */
    .nav-row-2 .status-chip {
        border-left: none;
    }
    
    /* Auto-refresh mobile - compact version */
    .auto-refresh-control {
        padding: 0.25rem 0.5rem;
        gap: 0.3rem;
    }
    
    .refresh-input {
        width: 2.2rem;
        font-size: 0.8rem;
        padding: 0.2rem 0.25rem;
    }
    
    .refresh-unit {
        font-size: 0.65rem;
    }
    
    .refresh-toggle {
        font-size: 0.8rem;
        padding: 0.25rem;
        gap: 0.25rem;
    }
    
    .refresh-label {
        display: inline;
        font-size: 0.7rem;
    }
    
    .status-chip {
        font-size: 0.7rem;
        padding: 0.3rem 0.6rem;
    }
}

.pill-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 1.25rem;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--text);
    font-size: 0.85rem;
}

/* ============================================
   MOBILE TOOLS - True Mobile (max 480px)
   ============================================ */
@media (max-width: 480px) {
    /* Tools Section Container */
    .calculator-section {
        padding: 1rem;
        margin: 1rem 0;
    }
    
    .calculator-section h2 {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }
    
    /* Calculator Card */
    .calculator-card {
        padding: 1rem;
        border-radius: 1rem;
    }
    
    /* Tab Buttons - 2x2 Grid */
    .calc-tabs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
        margin-bottom: 1rem;
    }
    
    .calc-tab {
        padding: 0.75rem 0.5rem;
        font-size: 0.85rem;
        min-height: 44px; /* Touch-friendly */
        border-radius: 0.5rem;
        white-space: nowrap;
    }
    
    /* Form Rows - Stack Vertically */
    .calc-row {
        margin-bottom: 1rem;
    }
    
    .calc-row label {
        font-size: 0.75rem;
        margin-bottom: 0.5rem;
        display: block;
    }
    
    /* Full Width Selects */
    .calc-select,
    .calc-select-sm {
        width: 100%;
        min-height: 48px; /* Touch-friendly */
        font-size: 1rem;
        padding: 0.75rem;
        border-radius: 0.5rem;
    }
    
    /* Input Groups - Stack Vertically */
    .calc-input-group,
    .calc-convert-group {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .calc-input,
    .calc-input-sm {
        width: 100%;
        min-height: 48px;
        font-size: 1rem;
        padding: 0.75rem;
        border-radius: 0.5rem;
        text-align: center;
    }
    
    .calc-unit-select,
    .calc-unit-select-sm {
        width: 100%;
        min-height: 48px;
        font-size: 1rem;
        padding: 0.75rem;
        border-radius: 0.5rem;
    }
    
    /* Convert Tool Specific */
    #calc-convert .calc-convert-group {
        flex-direction: column;
    }
    
    /* Swap Button */
    .calc-swap-btn {
        width: 100%;
        min-height: 44px;
        margin: 0.5rem 0;
        border-radius: 0.5rem;
    }
    
    .calc-swap-btn i {
        transform: rotate(0deg); /* Horizontal arrows for vertical swap */
    }
    
    /* Results Box */
    .calc-result {
        padding: 1rem;
        border-radius: 0.75rem;
        text-align: center;
    }
    
    .calc-result-value {
        font-size: 1.4rem;
        word-break: break-word;
        overflow-wrap: break-word;
    }
    
    #calc-convert .calc-result-value {
        font-size: 1.5rem;
    }
    
    .calc-result-label {
        font-size: 0.7rem;
    }
    
    /* Purity Tool */
    #calc-purity .calc-result-value-sm {
        font-size: 1.2rem;
    }
    
    #calc-purity .calc-result-label {
        font-size: 1.2rem;
    }
    
    .calc-purity-group {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .calc-slider {
        width: 100%;
        height: 44px;
    }
    
    .calc-purity-input {
        width: 100%;
        min-height: 48px;
        font-size: 1rem;
        text-align: center;
    }
    
    /* Coin Values Tool */
    .coin-label-row {
        display: none; /* Hide side-by-side labels on mobile */
    }
    
    .coin-search-group {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    /* Add Search Coin label above search input on mobile */
    .coin-search-group::before {
        content: 'SEARCH COIN';
        display: block;
        order: 1;
        font-size: 0.75rem;
        color: var(--muted);
        text-transform: uppercase;
        letter-spacing: 1px;
    }
    
    .coin-search-group .coin-search-input,
    .coin-search-group .mobile-input-wrapper:has(.coin-search-input) {
        width: 100%;
        min-height: 48px;
        font-size: 1rem;
        order: 2;
    }
    
    .coin-suggestions {
        position: relative;
        top: auto;
        order: 3;
        width: 100%;
        max-height: 200px;
    }
    
    /* Add QTY label after suggestions on mobile */
    .coin-search-group::after {
        content: 'QTY';
        display: block;
        order: 4;
        font-size: 0.75rem;
        color: var(--muted);
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-top: 0.5rem;
    }
    
    .coin-search-group .coin-qty-input,
    .coin-search-group .mobile-input-wrapper:has(.coin-qty-input) {
        width: 100%;
        min-height: 48px;
        font-size: 1rem;
        text-align: center;
        order: 5;
    }
    
    /* Center cert checker link on mobile */
    .cert-checker-link {
        width: 100%;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: 1rem;
        text-align: center;
    }
    
    /* Coin Results - Single Column Specs */
    .coin-specs {
        grid-template-columns: 1fr !important;
        gap: 0.5rem;
    }
    
    .coin-spec {
        display: flex;
        justify-content: space-between;
        padding: 0.5rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .coin-spec:last-child {
        border-bottom: none;
    }
    
    .coin-name {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }
    
    .coin-melt {
        margin-top: 0.75rem;
        padding-top: 0.75rem;
    }
    
    .melt-value {
        font-size: 1.5rem;
    }
    
    .coin-results {
        max-height: 250px;
    }
    
    .coin-result-item {
        padding: 0.75rem;
        min-height: 60px;
    }
    
    /* Reset Button */
    #tool-reset {
        min-height: 44px;
        padding: 0.75rem 1rem;
    }
    
    /* Tools Modal Close */
    .calculator-close {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }
    
    /* Mobile Clear Buttons */
    .mobile-input-wrapper {
        position: relative;
        width: 100%;
    }
    
    .mobile-input-wrapper input {
        width: 100%;
        padding-right: 36px;
    }
    
    .mobile-clear-btn {
        position: absolute;
        right: 10px;
        top: 50%;
        transform: translateY(-50%);
        width: 24px;
        height: 24px;
        border: none;
        background: transparent;
        color: rgba(255,255,255,0.25);
        font-size: 2.0rem;
        font-weight: 300;
        line-height: 1;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 0;
    }
    
    .mobile-clear-btn:active {
        color: rgba(255,255,255,0.9);
    }
    
    [data-theme="light"] .mobile-clear-btn {
        color: rgba(0,0,0,0.4);
    }
    
    [data-theme="light"] .mobile-clear-btn:active {
        color: rgba(0,0,0,0.8);
    }
}

/* Extra Small Phones (max 375px) */
@media (max-width: 375px) {
    .calc-tab {
        font-size: 0.75rem;
        padding: 0.6rem 0.25rem;
    }
    
    .calc-result-value {
        font-size: 1.2rem;
    }
    
    #calc-convert .calc-result-value {
        font-size: 1.3rem;
    }
    
    #calc-purity .calc-result-value-sm,
    #calc-purity .calc-result-label {
        font-size: 1rem;
    }
}

/* Mobile Tooltip Fixes - Prevent horizontal overflow */
@media (max-width: 480px) {
    /* Spec label tooltips */
    .spec-label.has-tooltip::after {
        position: absolute !important;
        left: 0 !important;
        right: auto !important;
        bottom: auto !important;
        top: calc(100% + 8px) !important;
        transform: none !important;
        width: 200px !important;
        max-width: 200px !important;
        white-space: normal !important;
        z-index: 9999 !important;
    }
    
    .spec-label.has-tooltip::before {
        display: none !important;
    }
    
    /* Melt label tooltips - appear ABOVE since at bottom of tool */
    .melt-label.has-tooltip::after {
        position: absolute !important;
        left: 0 !important;
        right: auto !important;
        top: auto !important;
        bottom: calc(100% + 8px) !important;
        transform: none !important;
        width: 200px !important;
        max-width: 200px !important;
        white-space: normal !important;
        z-index: 9999 !important;
    }
    
    .melt-label.has-tooltip::before {
        display: none !important;
    }
    
    /* Asset card status tooltips */
    .updated-at.has-tooltip::after {
        position: absolute !important;
        left: 0 !important;
        right: auto !important;
        bottom: auto !important;
        top: calc(100% + 8px) !important;
        transform: none !important;
        width: 220px !important;
        max-width: 220px !important;
        white-space: normal !important;
        z-index: 9999 !important;
    }
    
    .updated-at.has-tooltip::before {
        display: none !important;
    }
}

/* ============================================
   CERT CHECKER MODAL
   ============================================ */

.cert-checker-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 8px;
    font-size: 0.82rem;
    color: var(--accent-1);
    text-decoration: none;
    opacity: 0.85;
    transition: opacity 0.2s, color 0.2s;
    width: calc(100% - 80px - 0.5rem); /* Match search input width */
}

.cert-checker-link:hover {
    opacity: 1;
    color: var(--accent-2);
    text-decoration: underline;
}

.cert-checker-link i {
    font-size: 0.9rem;
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Modal Box */
.cert-modal {
    background: var(--panel-strong);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 28px 32px;
    max-width: 420px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px) scale(0.95);
    transition: transform 0.25s ease;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.modal-overlay.active .cert-modal {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--muted);
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--danger);
}

.cert-modal h3 {
    margin: 0 0 4px 0;
    font-size: 1.3rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 10px;
}

.cert-modal h3 i {
    color: var(--accent-1);
}

.modal-subtitle {
    color: var(--muted);
    font-size: 0.85rem;
    margin: 0 0 20px 0;
}

/* Cert Form Steps */
.cert-step {
    margin-bottom: 20px;
}

.cert-step label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Service Buttons */
.cert-service-btns {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cert-service-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 18px;
    background: var(--panel);
    border: 2px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.cert-service-btn:hover {
    border-color: var(--accent-1);
    background: rgba(33, 211, 255, 0.1);
}

.cert-service-btn.selected {
    border-color: var(--accent-1);
    background: rgba(33, 211, 255, 0.15);
}

.cert-service-btn strong {
    font-size: 1rem;
    color: var(--text);
}

.cert-service-btn span {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 2px;
}

/* Cert Input */
.cert-input {
    width: 100%;
    padding: 12px 14px;
    font-size: 1rem;
    background: var(--panel);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text);
    transition: border-color 0.2s;
}

.cert-input:focus {
    outline: none;
    border-color: var(--accent-1);
}

.cert-input.disabled,
.cert-input:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: rgba(0, 0, 0, 0.2);
}

.cert-input::placeholder {
    color: var(--muted);
    opacity: 0.6;
}

.cert-hint {
    display: block;
    margin-top: 6px;
    font-size: 0.75rem;
    color: var(--muted);
}

.cert-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--text);
    cursor: pointer;
    text-transform: none;
    font-weight: normal;
    letter-spacing: normal;
}

.cert-checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-1);
    cursor: pointer;
    position: relative;
    top: 3px;
}

.cert-checkbox-label span {
    color: var(--muted);
}

/* Link Preview */
.cert-link-preview {
    background: var(--panel);
    padding: 10px 14px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--accent-1);
    word-break: break-all;
    margin-bottom: 14px;
}

/* Verify Button */
.cert-verify-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px 20px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.cert-verify-btn:hover {
    box-shadow: 0 8px 25px rgba(33, 211, 255, 0.3);
}

/* Mobile Responsive */
@media (max-width: 480px) {
    .modal-overlay {
        align-items: flex-start;
        padding: 0;
    }
    
    .cert-modal {
        width: 100%;
        max-width: 100%;
        min-height: 100vh;
        min-height: 100dvh; /* Dynamic viewport height for mobile */
        margin: 0;
        padding: 20px;
        padding-top: 60px; /* Space for close button */
        border-radius: 0;
        overflow-y: auto;
    }
    
    .modal-close {
        position: fixed;
        top: 12px;
        right: 16px;
        font-size: 2.2rem;
        z-index: 10001;
        background: var(--panel-strong);
        width: 44px;
        height: 44px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .cert-modal h3 {
        font-size: 1.15rem;
    }
    
    .cert-service-btn {
        padding: 16px 18px;
    }
    
    .cert-input {
        min-height: 48px;
        font-size: 16px; /* Prevents iOS zoom on focus */
    }
    
    .cert-verify-btn {
        min-height: 52px;
        font-size: 1.1rem;
    }
    
    .cert-checkbox-label {
        padding: 10px 0;
    }
}