/* ==========================================================================
   Global FinTech Calculator Suite - Comprehensive CSS Architecture
   Includes Multi-Language i18n & RTL (Arabic) Support
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;600&family=Noto+Sans+Arabic:wght@400;600;700&display=swap');

:root {
  --bg-dark: #090d16;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-highlight: rgba(99, 102, 241, 0.4);
  
  --primary: #6366f1;
  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
  --secondary-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --accent-amber: #f59e0b;
  --accent-cyan: #06b6d4;
  --accent-rose: #f43f5e;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --glass-bg: rgba(15, 23, 42, 0.65);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-glow: 0 10px 30px -10px rgba(99, 102, 241, 0.3);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-dark: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: #ffffff;
  --border-color: rgba(0, 0, 0, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.5);
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.08);
}

/* RTL Support for Arabic */
[dir="rtl"] {
  font-family: 'Noto Sans Arabic', 'Plus Jakarta Sans', sans-serif;
  text-align: right;
}

[dir="rtl"] .search-icon {
  left: auto;
  right: 1.2rem;
}

[dir="rtl"] .search-input-box {
  padding: 1.1rem 3.2rem 1.1rem 1.5rem;
}

[dir="rtl"] .card-action-btn span:last-child {
  transform: rotate(180deg);
}

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

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header & Navigation */
.header-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
}

.nav-content {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--text-main);
}

.logo-badge {
  background: var(--primary-gradient);
  color: #fff;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-select-dropdown {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.5rem 0.8rem;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.lang-select-dropdown:hover {
  border-color: var(--primary);
}

.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.5rem 1rem;
  border-radius: 30px;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle-btn:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* Ad Unit Containers */
.ad-unit-slot {
  margin: 1.5rem auto;
  text-align: center;
  background: rgba(15, 23, 42, 0.4);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  max-width: 1200px;
  overflow: hidden;
}

.ad-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}

.ad-placeholder-box {
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 0.85rem;
  font-family: 'JetBrains Mono', monospace;
}

/* Hero Section */
.hero-section {
  padding: 3.5rem 1.5rem 2rem 1.5rem;
  text-align: center;
  background: radial-gradient(circle at 50% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 750px;
  margin: 0 auto 2rem auto;
}

.search-wrapper {
  max-width: 650px;
  margin: 0 auto 2rem auto;
  position: relative;
}

.search-input-box {
  width: 100%;
  padding: 1.1rem 1.5rem 1.1rem 3.2rem;
  font-size: 1.05rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 40px;
  color: var(--text-main);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
  transition: var(--transition-fast);
  outline: none;
}

.search-input-box:focus {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.search-icon {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--text-muted);
}

.category-badges-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  max-width: 1000px;
  margin: 0 auto 2.5rem auto;
}

.category-badge {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.55rem 1.2rem;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.category-badge:hover, .category-badge.active {
  background: var(--primary-gradient);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.main-wrapper {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem 1.5rem;
  flex: 1;
  width: 100%;
}

.calculators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: var(--transition-fast);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.calc-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.5);
  background: var(--bg-card-hover);
}

.card-country-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.card-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.9rem;
}

.calculator-view-container {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(16px);
}

.calculator-view-container.active {
  display: block;
}

.tool-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.tool-header {
  margin-bottom: 2rem;
}

.tool-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.tool-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.calculator-dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

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

.calc-form-group {
  margin-bottom: 1.25rem;
}

.calc-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.calc-input-field, .calc-select-field {
  width: 100%;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  outline: none;
  transition: var(--transition-fast);
}

.calc-input-field:focus, .calc-select-field:focus {
  border-color: var(--primary);
}

.range-slider {
  width: 100%;
  margin-top: 0.5rem;
  accent-color: var(--primary);
}

.results-panel-card {
  background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.15), rgba(15, 23, 42, 0.8));
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-main-highlight {
  text-align: center;
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.result-main-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.result-main-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: #10b981;
  margin: 0.3rem 0;
  font-family: 'JetBrains Mono', monospace;
}

.result-metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.metric-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.9rem;
  border-radius: var(--radius-sm);
}

.metric-title {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.metric-val {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  font-family: 'JetBrains Mono', monospace;
}

.btn-primary-action {
  width: 100%;
  padding: 1rem;
  background: var(--primary-gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.seo-content-block {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.seo-content-block h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.seo-content-block p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.formula-card {
  background: rgba(0, 0, 0, 0.3);
  border-left: 4px solid var(--primary);
  padding: 1rem 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  margin: 1.25rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.faq-accordion {
  margin-top: 1.5rem;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq-question {
  padding: 1rem;
  background: rgba(255, 255, 255, 0.02);
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
}

.faq-answer {
  padding: 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.2);
}

.app-footer {
  background: var(--glass-bg);
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
}

#print-modal-container {
  display: none;
}

@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  
  .header-nav, .hero-section, .search-wrapper, .category-badges-container,
  .calculators-grid, .ad-unit-slot, .tool-back-btn, .btn-primary-action,
  .calc-form-group, .range-slider, .app-footer, .seo-content-block {
    display: none !important;
  }

  .calculator-view-container {
    border: none !important;
    background: transparent !important;
    box-shadow: none !important;
    padding: 0 !important;
  }

  #print-modal-container {
    display: block !important;
    width: 100%;
  }

  .printable-document {
    padding: 2rem;
    font-family: Arial, sans-serif;
    color: #111;
  }

  .printable-document h2 {
    font-size: 22pt;
    margin-bottom: 0.2rem;
  }

  .doc-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
  }

  .doc-table th, .doc-table td {
    border: 1px solid #ccc;
    padding: 8px 12px;
    text-align: left;
    font-size: 10pt;
  }

  .doc-table th {
    background-color: #f2f2f2;
  }

  .doc-footer-signatures {
    display: flex;
    justify-content: space-between;
    margin-top: 4rem;
  }

  .sig-line {
    width: 200px;
    border-bottom: 1px solid #000;
    margin-bottom: 0.4rem;
  }
}