/* ========================================
   Bestlsatprep Course - Educational Platform
   Editorial-Architectural Design System
   ======================================== */

/* CSS Variables - Sophisticated Color System */
:root {
  /* Primary Palette - Architectural Neutrals */
  --color-primary: #1a1a1a;
  --color-secondary: #2d2d2d;
  --color-accent: #d4a574;
  --color-accent-light: #e8c9a3;
  --color-background: #fafaf8;
  --color-surface: #ffffff;
  
  /* Text Colors */
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-text-inverse: #ffffff;
  
  /* Architectural Accents */
  --color-border: #e5e5e0;
  --color-border-dark: #cccccc;
  --color-overlay: rgba(26, 26, 26, 0.85);
  
  /* Spacing System */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 8rem;
  
  /* Typography Scale */
  --font-display: 'Playfair Display', serif;
  --font-heading: 'Cormorant Garamond', serif;
  --font-body: 'Crimson Text', serif;
  --font-accent: 'Lato', sans-serif;
  
  /* Transitions */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
}

/* ========================================
   Global Reset & Base Styles
   ======================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  font-weight: 300;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

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

a:hover {
  color: var(--color-accent);
}

.text-accent {
  color: var(--color-accent);
}

.text-muted {
  color: var(--color-text-muted);
}

.lead-text {
  font-size: 1.375rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.small-caps {
  font-family: var(--font-accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.875rem;
  font-weight: 600;
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
}

.navbar-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-primary) !important;
  letter-spacing: -0.01em;
}

.nav-link {
  font-family: var(--font-accent);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-text-secondary) !important;
  padding: 0.5rem 1rem !important;
  transition: var(--transition-base);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 1px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-link:hover {
  color: var(--color-primary) !important;
}

/* ========================================
   Hero Sections
   ======================================== */

.hero-section {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-2xl) 0;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  margin-bottom: var(--space-md);
  animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  opacity: 0.03;
}

/* ========================================
   Editorial Grid System
   ======================================== */

.editorial-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.grid-span-12 { grid-column: span 12; }
.grid-span-6 { grid-column: span 6; }
.grid-span-4 { grid-column: span 4; }
.grid-span-3 { grid-column: span 3; }

@media (max-width: 768px) {
  .editorial-grid {
    grid-template-columns: 1fr;
  }
  .grid-span-12,
  .grid-span-6,
  .grid-span-4,
  .grid-span-3 {
    grid-column: span 1;
  }
}

/* ========================================
   Sections & Containers
   ======================================== */

section {
  padding: var(--space-2xl) 0;
  position: relative;
}

.section-title {
  margin-bottom: var(--space-lg);
  text-align: center;
}

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

/* ========================================
   Cards & Content Blocks
   ======================================== */

.card-editorial {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card-editorial::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--color-accent);
  transition: height 0.4s ease;
}

.card-editorial:hover::before {
  height: 100%;
}

.card-editorial:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

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

.card-text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

/* Course Cards */
.course-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.course-card .btn-outline-custom{
  width: max-content;
}

.course-card-image {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: var(--transition-slow);
}

.course-card:hover .course-card-image {
  transform: scale(1.05);
}

.course-card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.course-meta {
  font-family: var(--font-accent);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.price-tag {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-accent);
  font-weight: 300;
  margin: var(--space-md) 0;
}

/* ========================================
   Buttons
   ======================================== */

.btn-primary-custom {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border: 2px solid var(--color-primary);
  padding: 1rem 2.5rem;
  font-family: var(--font-accent);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  transition: var(--transition-base);
  display: inline-block;
  position: relative;
  overflow: hidden;
}

.btn-primary-custom::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-accent);
  transition: left 0.4s ease;
  z-index: -1;
}

.btn-primary-custom:hover {
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}

.btn-primary-custom:hover::before {
  left: 0;
}

.btn-outline-custom {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  padding: 1rem 2.5rem;
  font-family: var(--font-accent);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  transition: var(--transition-base);
  display: inline-block;
}

.btn-outline-custom:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

/* ========================================
   Architectural Decorative Elements
   ======================================== */

.architectural-line {
  position: absolute;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  height: 1px;
}

.architectural-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.3;
  pointer-events: none;
}

.noise-texture {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="300" height="300"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="4" /></filter><rect width="100%" height="100%" filter="url(%23noise)" opacity="0.05"/></svg>');
  pointer-events: none;
}

/* ========================================
   Timeline
   ======================================== */

.timeline {
  position: relative;
  padding: var(--space-lg) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.timeline-item:nth-child(odd) .timeline-content {
  text-align: right;
  padding-right: var(--space-lg);
}

.timeline-item:nth-child(even) .timeline-content {
  order: 2;
  text-align: left;
  padding-left: var(--space-lg);
  justify-content: flex-end;
}

.timeline-content {
  flex: 1;
  max-width: 45%;
}

.timeline-marker {
  width: 20px;
  height: 20px;
  background: var(--color-accent);
  border: 4px solid var(--color-background);
  border-radius: 50%;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

@media (max-width: 768px) {
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    flex-direction: column;
    align-items: flex-start;
    padding-left: 50px;
  }
  
  .timeline-marker {
    left: 20px;
  }
  
  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    text-align: left;
    padding: 0;
    max-width: 100%;
  }
}

/* ========================================
   Forms
   ======================================== */

.form-control {
  border: 1px solid var(--color-border);
  padding: 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition-base);
  background: var(--color-surface);
}

.form-control:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.1);
  outline: none;
}

.form-label {
  font-family: var(--font-accent);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

/* ========================================
   Cookie Banner
   ======================================== */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-md);
  z-index: 9999;
  box-shadow: var(--shadow-lg);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-banner-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.cookie-banner p {
  margin: 0;
  flex: 1;
}

.cookie-banner-actions {
  display: flex;
  gap: var(--space-sm);
}

.cookie-banner button {
  padding: 0.75rem 1.5rem;
  border: none;
  font-family: var(--font-accent);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition-base);
}

.cookie-accept {
  background: var(--color-accent);
  color: var(--color-primary);
}

.cookie-decline {
  background: transparent;
  color: var(--color-text-inverse);
  border: 1px solid var(--color-text-inverse);
}

@media (max-width: 768px) {
  .cookie-banner-content {
    flex-direction: column;
    text-align: center;
  }
  
  .cookie-banner-actions {
    width: 100%;
    flex-direction: column;
  }
  
  .cookie-banner button {
    width: 100%;
  }
}

/* ========================================
   Footer
   ======================================== */

footer {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-xl) 0 var(--space-md);
  border-top: 4px solid var(--color-accent);
}

.footer-content {
  margin-bottom: var(--space-lg);
}

.footer-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-text-inverse);
  margin-bottom: var(--space-md);
}

.footer-links a {
  color: var(--color-text-inverse);
  opacity: 0.8;
  display: block;
  margin-bottom: 0.5rem;
  transition: var(--transition-base);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-accent);
  transform: translateX(5px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

/* ========================================
   Animations
   ======================================== */

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 1s ease-out;
}

.fade-in-up {
  animation: fadeInUp 1s ease-out;
}

/* ========================================
   Utility Classes
   ======================================== */

.text-center {
  text-align: center;
}

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.py-0 { padding-top: 0 !important; padding-bottom: 0 !important; }
.py-1 { padding-top: var(--space-xs); padding-bottom: var(--space-xs); }
.py-2 { padding-top: var(--space-sm); padding-bottom: var(--space-sm); }
.py-3 { padding-top: var(--space-md); padding-bottom: var(--space-md); }
.py-4 { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.py-5 { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }

.bg-light {
  background-color: var(--color-surface);
}

.bg-accent {
  background-color: var(--color-accent);
}

/* ========================================
   Responsive Overrides
   ======================================== */

@media (max-width: 992px) {
  :root {
    --space-lg: 3rem;
    --space-xl: 4rem;
    --space-2xl: 5rem;
  }
  
  section {
    padding: var(--space-xl) 0;
  }
}

@media (max-width: 576px) {
  body {
    font-size: 1rem;
  }
  
  .lead-text {
    font-size: 1.125rem;
  }
}



.navbar-brand img{
    max-width: 250px;
    width: 250px;
    object-fit: contain;
}

html{
    overflow-x: hidden;
}


footer .navbar-brand img{
    filter: brightness(0) invert(1);
}

.footer-text{
    margin-top: 20px;
}