/* ============================================
   ROOT VARIABLES
   ============================================ */
:root {
    --bg-primary: #f0f4f8;
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-card-solid: #ffffff;
    --bg-input: rgba(255, 255, 255, 0.5);
    --text-primary: #0b1120;
    --text-secondary: #4a5a72;
    --text-muted: #8a9bb0;
    --border-color: rgba(255, 255, 255, 0.25);
    --shadow-sm: 0 8px 32px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 12px 48px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.08);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.06);
    --gradient-start: #fbbf24;
    --gradient-end: #f59e0b;
    --tab-active: #f59e0b;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-card: 28px;
    --radius-btn: 16px;
    --glass-blur: 20px;
    --font: 'IRANSansXFaNum', 'Segoe UI', system-ui, sans-serif;
}

[data-theme="dark"] {
    --bg-primary: #0a0f1e;
    --bg-card: rgba(20, 30, 50, 0.7);
    --bg-card-solid: #141e32;
    --bg-input: rgba(30, 45, 70, 0.6);
    --text-primary: #eef2f8;
    --text-secondary: #a0b4cc;
    --text-muted: #5a6f8a;
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 12px 48px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.35);
}

/* ============================================
   RESET & BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
    min-height: 100vh;
    padding: 24px;
    background-image:
        radial-gradient(ellipse at 10% 20%, rgba(245, 158, 11, 0.05) 0%, transparent 60%),
        radial-gradient(ellipse at 90% 80%, rgba(59, 130, 246, 0.04) 0%, transparent 60%);
    background-attachment: fixed;
}

/* ============================================
   GLASS CARD
   ============================================ */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-glass);
    transition: var(--transition);
}

.glass-card:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(245, 158, 11, 0.15);
}

/* ============================================
   CONTAINER
   ============================================ */
.calc-wrapper {
    max-width: 1100px;
    margin: 0 auto;
    animation: fadeSlideUp 0.7s ease both;
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ============================================
   HEADER
   ============================================ */
.calc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.back-home {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 10px 18px;
    border-radius: 50px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.back-home:hover {
    color: var(--tab-active);
    transform: translateX(-4px);
    border-color: var(--tab-active);
    box-shadow: var(--shadow-sm);
}

.calc-title {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: flex;
    align-items: center;
    gap: 12px;
}

.calc-title i {
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    color: var(--tab-active);
    font-size: 1.8rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 46px;
    height: 46px;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-primary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--tab-active);
    color: white;
    transform: rotate(20deg) scale(1.05);
    border-color: var(--tab-active);
}

/* ============================================
   TABS (مشترک بین صفحات)
   ============================================ */
.calc-tabs {
    display: flex;
    gap: 6px;
    padding: 6px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-radius: 60px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.calc-tab {
    flex: 1;
    min-width: 80px;
    background: transparent;
    border: none;
    padding: 12px 18px;
    border-radius: 40px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: var(--font);
    position: relative;
    text-decoration: none;
}

.calc-tab i {
    font-size: 1.1rem;
    transition: var(--transition);
}

.calc-tab:hover:not(.active) {
    background: var(--bg-input);
    color: var(--text-primary);
}

.calc-tab.active {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: #fff;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
    transform: scale(1.02);
}

.calc-tab.active i {
    color: #fff;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 28px 30px;
    box-shadow: var(--shadow-glass);
    transition: var(--transition);
    margin-bottom: 20px;
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(245, 158, 11, 0.10);
}

.card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: -0.01em;
}

.card-title i {
    color: var(--tab-active);
    font-size: 1.3rem;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 14px;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    .form-row-3 {
        grid-template-columns: 1fr;
    }
}

input,
select {
    width: 100%;
    padding: 14px 18px;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    background: var(--bg-input);
    backdrop-filter: blur(8px);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font);
    transition: var(--transition);
    outline: none;
    direction: ltr;
    text-align: left;
}

input:focus,
select:focus {
    border-color: var(--tab-active);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.08);
    background: var(--bg-card);
}

input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

input[type="number"] {
    -moz-appearance: textfield;
}
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    padding: 14px 28px;
    border-radius: var(--radius-btn);
    border: none;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: var(--font);
    letter-spacing: 0.01em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: #fff;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(245, 158, 11, 0.35);
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: var(--bg-card);
    border-color: var(--tab-active);
    transform: translateY(-2px);
}

.btn-success {
    background: var(--success);
    color: #fff;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.2);
}

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(16, 185, 129, 0.35);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.78rem;
    border-radius: 12px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ============================================
   RESULT BOX
   ============================================ */
.result-box {
    background: var(--bg-input);
    backdrop-filter: blur(8px);
    border-radius: 18px;
    padding: 20px 24px;
    margin-top: 18px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.result-box::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 4px;
    height: 100%;
    border-radius: 0 4px 4px 0;
    transition: var(--transition);
}

.result-box.success::before {
    background: var(--success);
}
.result-box.error::before {
    background: var(--error);
}
.result-box.warning::before {
    background: var(--warning);
}

.result-box.success {
    border-color: rgba(16, 185, 129, 0.2);
}
.result-box.error {
    border-color: rgba(239, 68, 68, 0.2);
}
.result-box.warning {
    border-color: rgba(245, 158, 11, 0.2);
}

.result-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.result-value {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    direction: ltr;
    font-family: 'Inter', monospace;
    margin-top: 4px;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.result-value .highlight {
    color: var(--tab-active);
}
.result-value .positive {
    color: var(--success);
}
.result-value .negative {
    color: var(--error);
}

.result-sub {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 6px;
    line-height: 1.6;
}

.result-detail-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}
.result-detail-row:last-child {
    border-bottom: none;
}
.result-detail-row .label {
    color: var(--text-secondary);
}
.result-detail-row .value {
    font-weight: 600;
    color: var(--text-primary);
}
.result-detail-row .value.final {
    font-size: 1.2rem;
    color: var(--tab-active);
}

/* ============================================
   GOLD CARDS GRID
   ============================================ */
.gold-cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    margin-top: 10px;
}

@media (max-width: 900px) {
    .gold-cards-grid {
        grid-template-columns: 1fr 1fr;
    }
}

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

.gold-card {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 22px 24px;
    box-shadow: var(--shadow-glass);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.gold-card:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(245, 158, 11, 0.12);
}

.gold-card .card-title {
    font-size: 1rem;
    margin-bottom: 16px;
}

.gold-card .form-group {
    margin-bottom: 12px;
}
.gold-card .form-group label {
    font-size: 0.65rem;
}
.gold-card input,
.gold-card select {
    padding: 10px 14px;
    font-size: 0.9rem;
    border-radius: 12px;
}
.gold-card .btn {
    padding: 10px 16px;
    font-size: 0.85rem;
    border-radius: 12px;
    margin-top: 4px;
}
.gold-card .result-box {
    padding: 14px 18px;
    margin-top: 12px;
}
.gold-card .result-value {
    font-size: 1.2rem;
}
.gold-card .result-detail-row {
    font-size: 0.8rem;
    padding: 4px 0;
}
.gold-card .result-detail-row .value.final {
    font-size: 1rem;
}

/* ============================================
   COMPARISON TABLE
   ============================================ */
.compare-table-wrap {
    overflow-x: auto;
    margin-top: 10px;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    min-width: 400px;
}

.compare-table th {
    background: var(--bg-input);
    padding: 14px 16px;
    text-align: center;
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 2px solid var(--border-color);
}

.compare-table td {
    padding: 12px 16px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.compare-table tr:last-child td {
    border-bottom: none;
}

.compare-table .highlight-cell {
    font-weight: 700;
    color: var(--tab-active);
    font-size: 1.05rem;
}

.compare-table .positive-cell {
    color: var(--success);
}
.compare-table .negative-cell {
    color: var(--error);
}

/* ============================================
   TOAST
   ============================================ */
.toast-message {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    color: var(--text-primary);
    padding: 16px 32px;
    border-radius: 60px;
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 9999;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
    direction: rtl;
    opacity: 0;
    pointer-events: none;
    min-width: 200px;
}

.toast-message.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: all;
}

.toast-message.success {
    border-right: 4px solid var(--success);
}
.toast-message.success i {
    color: var(--success);
}
.toast-message.error {
    border-right: 4px solid var(--error);
}
.toast-message.error i {
    color: var(--error);
}
.toast-message.warning {
    border-right: 4px solid var(--warning);
}
.toast-message.warning i {
    color: var(--warning);
}

/* ============================================
   PURITY TOGGLE (برای صفحه طلا)
   ============================================ */
.purity-toggle {
    display: flex;
    gap: 8px;
    background: var(--bg-input);
    border-radius: 60px;
    padding: 4px;
    border: 2px solid var(--border-color);
    backdrop-filter: blur(8px);
}

.purity-btn {
    flex: 1;
    padding: 12px 24px;
    border: none;
    border-radius: 40px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font);
}

.purity-btn.active {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: #fff;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.25);
}

.purity-btn:hover:not(.active) {
    background: var(--bg-card);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 700px) {
    .card {
        padding: 20px 18px;
    }
    .calc-tab {
        min-width: 50px;
        padding: 10px 12px;
        font-size: 0.7rem;
    }
    .calc-tab span {
        display: none;
    }
    .calc-tab i {
        font-size: 1.3rem;
    }
    .calc-title {
        font-size: 1.4rem;
    }
    .result-value {
        font-size: 1.4rem;
    }
    .calc-header {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    .header-left {
        flex-wrap: wrap;
    }
    .gold-cards-grid {
        grid-template-columns: 1fr;
    }
    .purity-btn {
        padding: 10px 16px;
        font-size: 0.8rem;
    }
}

@media (max-width: 400px) {
    body {
        padding: 12px;
    }
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--tab-active);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: #d97706;
}
/* ======================================================================
   PriceLive calculator UI refresh
   Shared with the site's current liquid-glass design system.
   ====================================================================== */
.calculator-page {
    --calc-accent: #f59e0b;
    --calc-accent-strong: #ffb83d;
    --calc-surface: var(--pl-surface, rgba(255,255,255,.56));
    --calc-surface-strong: var(--pl-surface-strong, rgba(255,255,255,.72));
    --calc-border: var(--pl-border, rgba(255,255,255,.45));
    --calc-shadow: var(--pl-shadow, 0 20px 60px rgba(15,23,42,.14));
    min-height: 100dvh;
    background:
        radial-gradient(circle at 8% 8%, rgba(245,158,11,.09), transparent 32%),
        radial-gradient(circle at 92% 12%, rgba(59,130,246,.07), transparent 30%),
        linear-gradient(180deg, rgba(255,255,255,.10), transparent 40%);
}
html[data-theme="dark"] .calculator-page {
    background:
        radial-gradient(circle at 8% 8%, rgba(245,158,11,.10), transparent 30%),
        radial-gradient(circle at 92% 12%, rgba(37,99,235,.10), transparent 32%),
        linear-gradient(180deg, rgba(15,23,42,.20), transparent 48%);
}
.calculator-page .calc-wrapper { width: min(1120px, 100%); padding-top: clamp(8px, 2vw, 18px); }
.calculator-page .calc-header { margin-bottom: 16px; padding: 4px 0; }
.calculator-page .header-left { min-width: 0; }
.calculator-page .back-home,
.calculator-page .theme-toggle,
.calculator-page .calculator-sidebar-trigger {
    background: var(--calc-surface);
    border: 1px solid var(--calc-border);
    box-shadow: 0 10px 30px rgba(15,23,42,.10), inset 0 1px 0 rgba(255,255,255,.34);
    backdrop-filter: blur(18px) saturate(145%);
    -webkit-backdrop-filter: blur(18px) saturate(145%);
}
.calculator-page .theme-toggle,
.calculator-page .calculator-sidebar-trigger {
    width: 46px; height: 46px; display: inline-grid; place-items: center; border-radius: 50%; color: var(--text-primary); }
.calculator-page .header-actions { display: flex; align-items: center; gap: 9px; }
.calculator-page .calculator-sidebar-trigger { cursor: pointer; font: inherit; transition: transform .22s var(--pl-ease, ease), box-shadow .28s ease, border-color .28s ease; }
.calculator-page .calculator-sidebar-trigger:hover,
.calculator-page .theme-toggle:hover { transform: translateY(-2px) scale(1.03); border-color: rgba(245,158,11,.42); box-shadow: 0 14px 34px rgba(15,23,42,.14), inset 0 1px 0 rgba(255,255,255,.44); }
.calculator-page .calc-title { font-size: clamp(1.35rem, 2.6vw, 2rem); }
.calculator-page .calc-tabs {
    background: var(--calc-surface); border-color: var(--calc-border); box-shadow: var(--calc-shadow);
    backdrop-filter: blur(20px) saturate(145%); -webkit-backdrop-filter: blur(20px) saturate(145%); margin-bottom: 18px; }
.calculator-page .calc-tab { border: 1px solid transparent; }
.calculator-page .calc-tab.active {
    background: linear-gradient(180deg, rgba(255,190,66,.94), rgba(245,158,11,.90));
    border-color: rgba(255,255,255,.38); box-shadow: 0 10px 28px rgba(245,158,11,.22), inset 0 1px 0 rgba(255,255,255,.42); }
.calculator-page .card,
.calculator-page .gold-card,
.calculator-page .glass-card {
    background: var(--calc-surface); border: 1px solid var(--calc-border); box-shadow: var(--calc-shadow), inset 0 1px 0 rgba(255,255,255,.20);
    backdrop-filter: blur(22px) saturate(145%); -webkit-backdrop-filter: blur(22px) saturate(145%); border-radius: 24px; }
html[data-theme="dark"] .calculator-page .card,
html[data-theme="dark"] .calculator-page .gold-card,
html[data-theme="dark"] .calculator-page .glass-card { box-shadow: 0 24px 70px rgba(0,0,0,.30), inset 0 1px 0 rgba(255,255,255,.06); }
.calculator-page .card:hover,
.calculator-page .gold-card:hover { transform: translateY(-1px); border-color: rgba(245,158,11,.18); }
.calculator-page input,
.calculator-page select,
.calculator-page textarea {
    min-height: 48px; border: 1px solid var(--calc-border); background: rgba(255,255,255,.24); border-radius: 15px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.22); }
html[data-theme="dark"] .calculator-page input,
html[data-theme="dark"] .calculator-page select,
html[data-theme="dark"] .calculator-page textarea { background: rgba(15,23,42,.42); }
.calculator-page input:focus,
.calculator-page select:focus,
.calculator-page textarea:focus { border-color: rgba(245,158,11,.70); box-shadow: 0 0 0 4px rgba(245,158,11,.10), inset 0 1px 0 rgba(255,255,255,.18); }
.calculator-page .btn { min-height: 46px; border-radius: 999px; border: 1px solid rgba(255,255,255,.40); box-shadow: 0 10px 26px rgba(15,23,42,.10), inset 0 1px 0 rgba(255,255,255,.35); }
.calculator-page .btn-primary,
.calculator-page .btn-success,
.calculator-page .btn-warning { background: linear-gradient(180deg, rgba(255,190,66,.96), rgba(245,158,11,.90)) !important; color: #fff !important; border-color: rgba(255,255,255,.40) !important; }
.calculator-page .btn-secondary { background: rgba(255,255,255,.20); color: var(--text-primary); border-color: var(--calc-border); }
html[data-theme="dark"] .calculator-page .btn-secondary { background: rgba(15,23,42,.40); }
.calculator-page .btn:hover { transform: translateY(-2px); }
.calculator-page .btn:active,
.calculator-page .purity-btn:active,
.calculator-page .calc-tab:active { transform: translateY(1px) scale(.985); }
.calculator-page .result-box { background: rgba(255,255,255,.20); border: 1px solid var(--calc-border); border-radius: 18px; box-shadow: inset 0 1px 0 rgba(255,255,255,.18); }
html[data-theme="dark"] .calculator-page .result-box { background: rgba(15,23,42,.34); }
.calculator-page .compare-table-wrap { border: 1px solid var(--calc-border); border-radius: 18px; overflow-x: auto; background: rgba(255,255,255,.10); }
.calculator-page .compare-table th { background: rgba(245,158,11,.08); }
.calculator-page .compare-table th,
.calculator-page .compare-table td { border-color: var(--calc-border); }
.calculator-page .toast-message { background: var(--calc-surface-strong); border-color: var(--calc-border); backdrop-filter: blur(24px) saturate(145%); -webkit-backdrop-filter: blur(24px) saturate(145%); }
.gold-common-inputs { display: grid; grid-template-columns: minmax(0, 2fr) minmax(220px, 1fr); gap: 20px; align-items: end; }
.gold-main-input { font-size: 1.15rem !important; padding: 14px 18px !important; }
.calculator-helper { font-size: .75rem; color: var(--text-muted); margin-top: 8px; }
.calculator-actions-row { margin-top: 14px; display: flex; gap: 10px; flex-wrap: wrap; }
.calculator-narrow { max-width: 760px; }
@media (max-width: 900px) {
    .calculator-page { padding: 16px; }
    .calculator-page .calc-wrapper { width: 100%; }
    .gold-common-inputs { grid-template-columns: 1fr; gap: 12px; }
}
@media (max-width: 700px) {
    .calculator-page { padding: 12px; }
    .calculator-page .calc-header { flex-direction: row; align-items: center; }
    .calculator-page .header-left { flex: 1; min-width: 0; }
    .calculator-page .back-home { padding: 9px 12px; font-size: .78rem; }
    .calculator-page .calc-title { font-size: 1.08rem; gap: 7px; }
    .calculator-page .calc-title i { font-size: 1.05rem; }
    .calculator-page .theme-toggle,
    .calculator-page .calculator-sidebar-trigger { width: 40px; height: 40px; }
    .calculator-page .calc-tabs { gap: 4px; padding: 4px; margin-bottom: 12px; }
    .calculator-page .calc-tab { min-width: 0; padding: 10px 8px; }
    .calculator-page .calc-tab span { display: inline; font-size: .66rem; }
    .calculator-page .calc-tab i { font-size: .95rem; }
    .calculator-page .card,
    .calculator-page .gold-card { padding: 18px 15px; border-radius: 20px; margin-bottom: 12px; }
    .calculator-page .card-title { font-size: 1rem; margin-bottom: 14px; }
    .calculator-page .form-group { margin-bottom: 13px; }
    .calculator-page input,
    .calculator-page select { min-height: 46px; padding: 11px 13px; font-size: .9rem; }
    .calculator-page .btn { min-height: 44px; padding: 11px 17px; font-size: .84rem; }
    .calculator-page .compare-table { min-width: 560px; font-size: .78rem; }
    .calculator-page .compare-table th,
    .calculator-page .compare-table td { padding: 10px 9px; }
    .gold-main-input { font-size: 1rem !important; }
    .calculator-actions-row .btn { flex: 1 1 auto; }
}
@media (max-width: 420px) {
    .calculator-page { padding: 8px; }
    .calculator-page .calc-header { gap: 8px; }
    .calculator-page .header-left { gap: 7px; }
    .calculator-page .back-home { padding: 8px 10px; }
    .calculator-page .calc-title { font-size: .98rem; }
    .calculator-page .header-actions { gap: 6px; }
    .calculator-page .theme-toggle,
    .calculator-page .calculator-sidebar-trigger { width: 38px; height: 38px; }
    .calculator-page .calc-tab span { font-size: .60rem; }
    .calculator-page .calc-tab i { font-size: .88rem; }
    .calculator-page .card,
    .calculator-page .gold-card { padding: 15px 12px; }
    .calculator-actions-row { flex-direction: column; }
    .calculator-actions-row .btn { width: 100%; }
}