/* ================================================
   DailySilverPrice.today — Mobile-First Silver Theme
   ================================================ */

/* ---------- CSS Variables ---------- */
:root {
  /* Core Palette */
  --bg-body: #080a0f;
  --bg-surface: #0f1219;
  --bg-card: #151a28;
  --bg-card-alt: #1b2136;
  --bg-input: #111725;
  --border: #1f2940;
  --border-gold: rgba(226, 232, 240, 0.35);
  --border-silver: rgba(226, 232, 240, 0.35);

  /* Text */
  --text-primary: #f4f6fb;
  --text-secondary: #8f9bb3;
  --text-muted: #5f6d87;

  /* Silver Palette */
  --silver-50: #ffffff;
  --silver-100: #f8fafc;
  --silver-200: #f1f5f9;
  --silver-300: #e2e8f0;
  --silver-400: #cbd5e1;
  --silver-500: #ffffff;
  --silver-600: #cbd5e1;
  --silver-700: #94a3b8;
  --silver-800: #64748b;
  --silver-900: #475569;
  --silver-glow: rgba(226, 232, 240, 0.16);
  --silver-gradient: linear-gradient(135deg, #ffffff 0%, #e2e8f0 45%, #94a3b8 100%);
  --silver-gradient-soft: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(203, 213, 225, 0.04) 100%);

  /* Accents */
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.12);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.12);
  --whatsapp: #25d366;
  --whatsapp-dark: #128c7e;

  /* Layout */
  --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 100px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-gold: 0 4px 30px rgba(226, 232, 240, 0.12);
  --transition: 0.2s ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 68px;
  -webkit-font-smoothing: antialiased;
}

@media (min-width: 768px) {
  body { padding-bottom: 0; }
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px;
  width: 100%;
}

.silver-icon { color: var(--silver-300); }

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

/* ---------- NAVBAR ---------- */
.navbar {
  background: rgba(15, 18, 25, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 200;
  padding: 10px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  min-width: 0;
}

.logo-icon {
  font-size: 1.1rem;
  color: var(--silver-300);
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  display: inline-flex;
  align-items: baseline;
  color: #ffffff;
  white-space: nowrap;
}

@media (min-width: 480px) {
  .brand-name {
    font-size: 1.2rem;
  }
}

.brand-name .silver {
  color: #ffffff;
}

.brand-tag {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--silver-400);
  margin-left: 2px;
  opacity: 0.85;
}

.header-datetime {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--silver-300);
  background: rgba(226, 232, 240, 0.08);
  border: 1px solid rgba(226, 232, 240, 0.22);
  padding: 4px 8px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.2px;
  white-space: nowrap;
  flex-shrink: 0;
}

@media (min-width: 480px) {
  .header-datetime {
    font-size: 0.74rem;
    padding: 5px 10px;
  }
}

.header-datetime .live-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  flex-shrink: 0;
}

/* ---------- PAGE TITLE & METAL SWITCHER ---------- */
.page-title-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 14px 0 14px 0;
}

.page-main-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

.page-main-title .silver {
  color: var(--silver-300);
}

.metal-switcher {
  display: inline-flex;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 9999px;
  padding: 3px;
  gap: 2px;
}

.metal-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  text-decoration: none;
  transition: all var(--transition);
}

.metal-btn:hover {
  color: var(--text-primary);
}

.metal-btn.active {
  background: linear-gradient(135deg, #fbbf24 0%, #d97706 100%);
  color: #0b0f19;
  box-shadow: 0 2px 8px rgba(234, 179, 8, 0.35);
}

.metal-btn.active-silver {
  background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 50%, #94a3b8 100%);
  color: #0b0f19;
  box-shadow: 0 2px 8px rgba(203, 213, 225, 0.35);
}

/* ---------- PRICE CARDS ---------- */
.cards-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 20px;
}

@media (min-width: 640px) {
  .cards-section {
    grid-template-columns: repeat(2, 1fr);
  }
}

.gold-card {
  background: var(--silver-gradient-soft);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  padding: 18px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.gold-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 15px rgba(226, 232, 240, 0.15);
}

.gold-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--silver-gradient);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 10px;
}

.card-karat {
  font-size: 1.2rem;
  font-weight: 800;
  color: #ffffff;
}

.card-purity {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 1px;
}

.card-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  white-space: nowrap;
}

.card-change.up {
  color: var(--green);
  background: var(--green-bg);
}

.card-change.down {
  color: var(--red);
  background: var(--red-bg);
}

/* Hero Price inside Card */
.card-hero-price {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin-bottom: 14px;
}

.hero-rupee {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--silver-500);
}

.hero-amount {
  font-size: 2rem;
  font-weight: 800;
  color: var(--silver-400);
  letter-spacing: -1px;
  line-height: 1;
}

.hero-per {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 4px;
}

.hero-diff {
  display: inline-block;
  font-size: 1.15rem;
  font-weight: 800;
  margin-left: 6px;
  letter-spacing: -0.3px;
}

.hero-diff.up {
  color: #22c55e;
}

.hero-diff.down {
  color: #ef4444;
}

/* Card Weight Grid */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.grid-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: rgba(226, 232, 240, 0.07);
  border: 1px solid rgba(226, 232, 240, 0.18);
  padding: 8px 10px;
  border-radius: var(--radius-xs);
  transition: all var(--transition);
}

.grid-item:hover {
  background: rgba(226, 232, 240, 0.14);
  border-color: var(--silver-400);
}

.grid-item span {
  font-size: 0.68rem;
  color: var(--silver-400);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.grid-item strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ---------- PANELS (Shared) ---------- */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  gap: 8px;
  flex-wrap: wrap;
}

.panel-header h2 {
  font-size: 1rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-primary);
}

.panel-header h2 i {
  color: var(--silver-300);
}

.gst-toggle-group {
  display: inline-flex;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 2px;
  gap: 2px;
}

.gst-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition);
}

.gst-btn.active {
  background: var(--silver-gradient);
  color: #080a0f;
  box-shadow: 0 2px 8px rgba(226, 232, 240, 0.4);
}

/* Forms & Inputs */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 14px;
}

.calc-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.calc-grid-3 .calc-field-full {
  grid-column: span 3;
}

@media (max-width: 580px) {
  .calc-grid-3 {
    grid-template-columns: 1fr 1fr;
  }
  .calc-field-discount {
    grid-column: span 2;
  }
}

.calc-field-full {
  grid-column: span 2;
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.calc-field label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.calc-field input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 9px 10px;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.92rem;
  font-weight: 700;
  outline: none;
  transition: border-color var(--transition);
}

.calc-field input:focus {
  border-color: var(--silver-400);
}

/* Segmented Buttons */
.segmented-group {
  display: flex;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 2px;
  gap: 2px;
}

.seg-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 0.76rem;
  font-weight: 700;
  padding: 6px 4px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.seg-btn.active {
  background: var(--silver-gradient);
  color: #080a0f;
  box-shadow: 0 2px 8px rgba(226, 232, 240, 0.3);
}

/* Breakdown & Totals */
.calc-output {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
}

.calc-breakdown {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.text-green {
  color: var(--green) !important;
}

.calc-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-total span {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--silver-300);
  letter-spacing: 0.3px;
}

.calc-total strong {
  font-size: 1.4rem;
  font-weight: 900;
  color: #ffffff;
}

.buy-results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  margin-top: 8px;
}

.buy-res-item {
  background: rgba(255, 255, 255, 0.03);
  padding: 8px;
  border-radius: var(--radius-xs);
  text-align: center;
  border: 1px solid var(--border);
}

.buy-res-item strong {
  display: block;
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--silver-100);
}

.buy-res-item small {
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 700;
}

/* ---------- STICKY WHATSAPP ---------- */
.sticky-wa {
  position: fixed;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 24px);
  max-width: 480px;
  z-index: 150;
}

@media (min-width: 768px) {
  .sticky-wa {
    bottom: 24px;
    right: 24px;
    left: auto;
    transform: none;
    width: auto;
    max-width: none;
  }
}

.btn-wa-full {
  width: 100%;
  background: var(--whatsapp);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-pill);
  padding: 12px 20px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: all var(--transition);
}

.btn-wa-full:hover {
  background: #20bd5a;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.55);
}

/* ---------- FOOTER ---------- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 30px 0 80px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: auto;
}

@media (min-width: 768px) {
  .footer { padding-bottom: 40px; }
}

.footer-brand {
  font-size: 1.1rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.footer-brand .silver {
  color: var(--silver-300);
}

.footer-brand .brand-tag {
  color: var(--silver-400);
  font-size: 0.75rem;
}

.footer p {
  max-width: 640px;
  margin: 0 auto 10px auto;
  line-height: 1.5;
}

.footer-city-links {
  margin: 20px 0;
  text-align: left;
  background: rgba(255, 255, 255, 0.02);
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.footer-links-title {
  display: block;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--silver-300);
  margin-bottom: 10px;
}

.city-links-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
}

.footer-city-link {
  color: var(--silver-300);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 600;
  transition: color var(--transition);
}

.footer-city-link:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-disclaimer {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 10px;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 12px;
}