/* My School Education OS — Enterprise Design System */
:root {
  --color-bg-primary: #090d16;
  --color-bg-secondary: #0f172a;
  --color-surface-card: rgba(15, 23, 42, 0.75);
  --color-surface-border: rgba(255, 255, 255, 0.1);
  --color-surface-hover: rgba(30, 41, 59, 0.8);
  
  --color-brand-primary: #6366f1;
  --color-brand-primary-hover: #4f46e5;
  --color-brand-accent: #a855f7;
  --color-brand-cyan: #06b6d4;

  --color-text-primary: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-glow: 0 0 40px -10px rgba(99, 102, 241, 0.35);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);

  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 4px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
}

.text-gradient {
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Header & Nav */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.85);
  border-bottom: 1px solid var(--color-surface-border);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
}

.logo-icon {
  font-size: 1.5rem;
}

.logo-text .badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  background: rgba(99, 102, 241, 0.2);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.4);
  border-radius: 20px;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

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

.cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-brand-primary) 0%, var(--color-brand-primary-hover) 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
  background: var(--color-surface-card);
  color: var(--color-text-primary);
  border-color: var(--color-surface-border);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-block {
  width: 100%;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
  text-align: center;
}

.hero-bg {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, rgba(168, 85, 247, 0.1) 40%, rgba(9, 13, 22, 0) 70%);
  filter: blur(60px);
  pointer-events: none;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  max-width: 900px;
  margin: 0 auto 24px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 720px;
  margin: 0 auto 40px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 60px;
}

/* Mockup Container */
.hero-mockup {
  max-width: 1000px;
  margin: 0 auto;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-glow), var(--shadow-card);
  overflow: hidden;
  text-align: left;
}

.mockup-header {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  background: rgba(15, 23, 42, 0.9);
  border-bottom: 1px solid var(--color-surface-border);
}

.dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #334155;
}

.dot:nth-child(1) { background: #ef4444; }
.dot:nth-child(2) { background: #f59e0b; }
.dot:nth-child(3) { background: #10b981; }

.mockup-search {
  margin-left: 20px;
  background: #1e293b;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  width: 300px;
}

.mockup-content {
  display: flex;
  min-height: 380px;
}

.mockup-sidebar {
  width: 200px;
  background: rgba(15, 23, 42, 0.5);
  border-right: 1px solid var(--color-surface-border);
  padding: 20px;
}

.mockup-nav-item {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 6px;

}

.mockup-nav-item.active {
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  font-weight: 600;
}

.mockup-main {
  flex: 1;
  padding: 24px;
}

.mockup-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.mockup-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-surface-border);
  padding: 16px;
  border-radius: var(--radius-md);
}

.mockup-card h3 {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.mockup-card .val {
  font-size: 1.5rem;
  font-weight: 700;
}

.mockup-card .trend {
  font-size: 0.75rem;
  color: #10b981;
}

.mockup-card .trend.highlight {
  color: #818cf8;
}

.mockup-chart-container {
  background: var(--color-surface-card);
  border: 1px solid var(--color-surface-border);
  padding: 20px;
  border-radius: var(--radius-md);
}

.mockup-chart-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.mockup-chart-bars {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 140px;
}

.bar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  height: 100%;
  justify-content: flex-end;
}

.bar {
  width: 40px;
  background: linear-gradient(180deg, #818cf8 0%, #4f46e5 100%);
  border-radius: 4px 4px 0 0;
}

.bar-col span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Stats Section */
.stats-section {
  padding: 60px 0;
  border-y: 1px solid var(--color-surface-border);
  background: rgba(15, 23, 42, 0.4);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-box {
  padding: 20px;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

/* Features Grid */
.features {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-surface-border);
  padding: 32px;
  border-radius: var(--radius-lg);
  transition: var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: var(--shadow-card);
}

.feature-card .icon {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

/* Feature Comparison Table */
.comparison-section {
  padding: 80px 0;
  background: rgba(15, 23, 42, 0.3);
}

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

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 40px;
}

.comparison-table th, .comparison-table td {
  padding: 18px 24px;
  text-align: left;
  border-bottom: 1px solid var(--color-surface-border);
}

.comparison-table th {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  background: rgba(15, 23, 42, 0.9);
}

.comparison-table th.highlight-col, .comparison-table td.highlight-col {
  background: rgba(99, 102, 241, 0.08);
  color: #a5b4fc;
  font-weight: 600;
}

/* Testimonials */
.testimonials-section {
  padding: 100px 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.testimonial-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-surface-border);
  padding: 36px;
  border-radius: var(--radius-lg);
}

.quote {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  font-style: italic;
  margin-bottom: 24px;
  line-height: 1.7;
}

.author {
  display: flex;
  align-items: center;
  gap: 16px;
}

.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
}

.details strong {
  display: block;
  font-size: 1rem;
}

.details span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Pricing */
.pricing {
  padding: 100px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: center;
}

.pricing-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-surface-border);
  padding: 40px;
  border-radius: var(--radius-xl);
  position: relative;
}

.pricing-card.popular {
  border-color: var(--color-brand-primary);
  box-shadow: var(--shadow-glow);
}

.popular-badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-brand-primary);
  color: #fff;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.tier {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.price {
  font-size: 2.8rem;
  font-weight: 800;
  font-family: var(--font-heading);
  margin-bottom: 16px;
}

.price span {
  font-size: 1rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.pricing-card .desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.pricing-card ul {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-card li {
  padding: 8px 0;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-card li::before {
  content: '✓';
  color: #10b981;
  font-weight: 700;
}

/* Security & Compliance */
.security-section {
  padding: 80px 0;
  background: rgba(15, 23, 42, 0.4);
  border-y: 1px solid var(--color-surface-border);
}

.compliance-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.compliance-item {
  background: var(--color-surface-card);
  border: 1px solid var(--color-surface-border);
  padding: 24px;
  border-radius: var(--radius-md);
  text-align: center;
}

.badge-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.compliance-item h4 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.compliance-item p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* Contact */
.contact {
  padding: 100px 0;
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.contact-info h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.contact-info p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.contact-meta {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.contact-form {
  background: var(--color-surface-card);
  border: 1px solid var(--color-surface-border);
  padding: 40px;
  border-radius: var(--radius-xl);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: #0f172a;
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

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

/* Footer */
footer {
  background: #050811;
  border-top: 1px solid var(--color-surface-border);
  padding: 60px 0 30px;
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-left p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  max-width: 300px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.footer-col h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-text-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .hero-title { font-size: 2.5rem; }
  .features-grid, .pricing-grid, .testimonials-grid { grid-template-columns: 1fr; }
  .stats-grid, .compliance-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-container { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr; }
}