/* AceJoule Website - Modern Educational Design System */

:root {
  /* Color System - Warm & Trustworthy */
  --color-primary: #E74C3C;
  --color-primary-dark: #C0392B;
  --color-primary-light: #F39C88;
  --color-secondary: #34495E;
  --color-secondary-light: #4A5F7F;
  --color-accent: #F39C12;
  --color-success: #27AE60;
  
  /* Neutrals */
  --color-bg: #FAFAF8;
  --color-bg-alt: #FFFFFF;
  --color-surface: #F5F5F3;
  --color-border: #E8E8E6;
  --color-text: #2C3E50;
  --color-text-light: #5D6D7E;
  --color-text-muted: #95A5A6;
  
  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  
  /* Spacing Scale - Optimized for readability */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  
  /* Sizes */
  --container-width: 1200px;
  --container-narrow: 800px;
  --border-radius: 12px;
  --border-radius-lg: 20px;
  
  /* Effects */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* Typography System */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-secondary);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-light);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

/* Layout Components */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ============================================
   HEADER & NAVIGATION
   For WordPress: See header-footer-wordpress.css
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.95);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-md);
  max-width: var(--container-width);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo img {
  height: 52px;
  width: auto;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  transition: transform 0.3s ease, filter 0.3s ease;
}

.logo img:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-secondary);
}

.logo-text .highlight {
  color: var(--color-primary);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
}

.nav-menu a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  transition: var(--transition);
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-menu a:hover {
  color: var(--color-primary);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
}

/* Hero Section */
.hero {
  padding: var(--space-xl) 0;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-surface) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 70%;
  height: 200%;
  background: radial-gradient(circle, rgba(231, 76, 60, 0.03) 0%, transparent 70%);
  animation: float 20s ease-in-out infinite;
  pointer-events: none;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-content {
  max-width: 800px;
  animation: fadeInUp 0.8s ease-out;
  position: relative;
  z-index: 1;
}

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

.hero-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-lg);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.trust-item::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 14px rgba(231, 76, 60, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
  color: white;
}

.btn-secondary {
  background: var(--color-secondary);
  color: white;
}

.btn-secondary:hover {
  background: var(--color-secondary-light);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}

.btn-whatsapp {
  background: #25D366;
  color: white;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background: #22BF5B;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
  color: white;
}

.btn-lg {
  padding: 1.125rem 2.25rem;
  font-size: 1.0625rem;
}

/* Full-width button for card footers - proper mobile touch targets */
.btn-full-width {
  width: 100%;
  justify-content: center;
  text-align: center;
}

/* Sticky WhatsApp CTA (included in header-footer-wordpress.css) */
.sticky-whatsapp {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  animation: pulse 2s infinite;
}

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

/* Section Styles */
.section {
  padding: var(--space-xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-lg);
}

.section-title {
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-light);
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.card {
  background: var(--color-bg-alt);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

/* Disable hover transform on touch devices to prevent click issues */
@media (hover: none) and (pointer: coarse) {
  .card:hover {
    transform: none;
  }
}

.card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
  color: white;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.card-subtitle {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}

.card-description {
  flex-grow: 1;
  margin-bottom: var(--space-md);
}

.card-highlights {
  list-style: none;
  margin-bottom: var(--space-md);
}

.card-highlights li {
  padding: var(--space-xs) 0;
  color: var(--color-text-light);
  display: flex;
  align-items: start;
  gap: var(--space-xs);
}

.card-highlights li::before {
  content: '→';
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
}

.card-footer {
  margin-top: auto;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* Feature List */
.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.feature-item {
  display: flex;
  gap: var(--space-md);
}

.feature-number {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.feature-content h4 {
  margin-bottom: var(--space-xs);
}

/* Quick Links */
.quick-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.quick-link-card {
  background: var(--color-surface);
  padding: var(--space-md);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-primary);
  transition: var(--transition);
}

.quick-link-card:hover {
  background: var(--color-bg-alt);
  border-left-color: var(--color-accent);
  transform: translateX(4px);
}

.quick-link-card h4 {
  margin-bottom: var(--space-xs);
  font-size: 1.125rem;
}

/* FAQ Accordion */
.faq-list {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-alt);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  padding: var(--space-md);
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-icon {
  font-size: 1.25rem;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 var(--space-md);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 var(--space-md) var(--space-md);
}

/* Calculator Form */
.calculator-form {
  background: var(--color-bg-alt);
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
  max-width: 600px;
  margin: var(--space-xl) auto;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.calculator-result {
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  border-radius: var(--border-radius);
  display: none;
}

.calculator-result.show {
  display: block;
}

.calculator-result.eligible {
  background: rgba(39, 174, 96, 0.1);
  border: 2px solid var(--color-success);
}

.calculator-result.not-eligible {
  background: rgba(231, 76, 60, 0.1);
  border: 2px solid var(--color-primary);
}

.result-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.result-details {
  margin-top: var(--space-md);
}

/* Table Styles */
.pattern-table {
  width: 100%;
  background: var(--color-bg-alt);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin: var(--space-lg) 0;
}

.pattern-table table {
  width: 100%;
  border-collapse: collapse;
}

.pattern-table th {
  background: var(--color-secondary);
  color: white;
  padding: var(--space-md);
  text-align: left;
  font-weight: 600;
}

.pattern-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

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

.pattern-table tr:hover td {
  background: var(--color-surface);
}

/* PYQ Cards */
.pyq-filters {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.pyq-filters select {
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-body);
  font-size: 1rem;
}

.pyq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
}

.pyq-card {
  background: var(--color-bg-alt);
  padding: var(--space-md);
  border-radius: var(--border-radius);
  border: 2px solid var(--color-border);
  transition: var(--transition);
}

.pyq-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.pyq-card-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: var(--space-sm);
}

.pyq-badge {
  padding: 0.25rem 0.75rem;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
}

.pyq-links {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.pyq-link {
  padding: 0.5rem 1rem;
  background: var(--color-surface);
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}

.pyq-link:hover {
  background: var(--color-primary);
  color: white;
}

/* Contact Info */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.contact-card {
  text-align: center;
  padding: var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
}

.contact-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
}

.contact-card h3 {
  margin-bottom: var(--space-xs);
  font-size: 1.25rem;
}

.contact-card a {
  font-size: 1.125rem;
  font-weight: 600;
}

/* ============================================
   FOOTER
   For WordPress: See header-footer-wordpress.css
   ============================================ */
.site-footer {
  background: var(--color-secondary);
  color: white;
  padding: var(--space-lg) 0 var(--space-md);
  margin-top: var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-section h3 {
  color: white;
  margin-bottom: var(--space-md);
  font-size: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
  padding-left: 4px;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 2.5rem;
  }

  .container {
    padding: 0 1rem;
  }

  .logo img {
    height: 40px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-alt);
    flex-direction: column;
    padding: var(--space-md);
    box-shadow: var(--shadow-lg);
    gap: var(--space-sm);
  }

  .nav-menu.active {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }

  .hero {
    padding: var(--space-lg) 0;
  }

  .hero h1 {
    font-size: 1.75rem;
    margin-bottom: var(--space-sm);
  }

  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: var(--space-md);
  }

  .hero-actions {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    padding: 0.875rem 1.5rem;
  }

  .section {
    padding: var(--space-lg) 0;
  }

  .section-header {
    margin-bottom: var(--space-md);
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .card {
    padding: var(--space-md);
  }

  .feature-list {
    gap: var(--space-md);
    margin: var(--space-md) 0;
  }

  .quick-links {
    gap: var(--space-sm);
    margin: var(--space-md) 0;
  }

  .sticky-whatsapp {
    bottom: 1rem;
    right: 1rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
  }

  .trust-strip {
    flex-direction: column;
    gap: var(--space-xs);
    padding-top: var(--space-md);
    margin-top: var(--space-md);
  }

  .pyq-filters {
    flex-direction: column;
  }

  .pyq-filters select {
    width: 100%;
  }

  .pattern-table {
    overflow-x: auto;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .footer-section h3 {
    font-size: 1rem;
    margin-bottom: var(--space-sm);
  }

  .footer-links li {
    margin-bottom: var(--space-xs);
  }

  .footer-bottom {
    padding-top: var(--space-md);
  }
}

@media (max-width: 480px) {
  :root {
    --space-lg: 1.25rem;
    --space-xl: 1.75rem;
    --space-2xl: 2rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  .btn {
    padding: 0.875rem 1.25rem;
    font-size: 0.9375rem;
    min-height: 44px; /* iOS recommended touch target */
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* Ensure all buttons have proper touch targets on mobile */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 44px;
  }

  .card-footer .btn {
    padding: 1rem 1.5rem;
  }
}

/* Scroll Reveal Animation */
.aj-hidden {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Utility Classes */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }