/* ============================================
   Knowledge Tree Autism Resources Portal
   Main Stylesheet
   ============================================ */

/* Import Cairo and Tajawal fonts from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700&family=Tajawal:wght@300;400;500&display=swap');

/* ============================================
   CSS Variables - Brand Colors
   ============================================ */
:root {
  /* Primary Colors */
  --forest-green: #1E5631;
  --warm-brown: #8B5A2B;
  --yellow-green: #A4DE02;
  
  /* Secondary Colors */
  --light-sage: #C5E8B7;
  --deep-earth: #4A3520;
  --cream: #F9F5E7;
  --charcoal: #333333;
  
  /* UI Colors */
  --white: #FFFFFF;
  --error: #d32f2f;
  --success: #388e3c;
  --warning: #f57c00;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  --shadow-md: 0 3px 6px rgba(0,0,0,0.15), 0 2px 4px rgba(0,0,0,0.12);
  --shadow-lg: 0 10px 20px rgba(0,0,0,0.15), 0 3px 6px rgba(0,0,0,0.10);
  --shadow-xl: 0 15px 25px rgba(0,0,0,0.15), 0 5px 10px rgba(0,0,0,0.05);
  
  /* Transitions */
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: 'Tajawal', sans-serif;
  background-color: var(--cream);
  color: var(--charcoal);
  line-height: 1.6;
  direction: rtl;
  text-align: right;
  min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Cairo', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--forest-green);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
}

h5 {
  font-size: 1.1rem;
  font-weight: 500;
}

h6 {
  font-size: 1rem;
  font-weight: 500;
}

p {
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
}

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

a:hover {
  color: var(--warm-brown);
}

/* ============================================
   Layout Components
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* ============================================
   Navigation & Header
   ============================================ */
.navbar {
  background: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-logo {
  height: 50px;
  width: auto;
}

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

.navbar-menu a {
  font-family: 'Cairo', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.navbar-menu a:hover,
.navbar-menu a.active {
  background: var(--light-sage);
  color: var(--forest-green);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--forest-green);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  font-family: 'Cairo', sans-serif;
  font-weight: 600;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  display: inline-block;
  text-align: center;
  font-size: 1rem;
}

.btn-primary {
  background: var(--forest-green);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--deep-earth);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background: var(--deep-earth);
}

.btn-accent {
  background: var(--yellow-green);
  color: var(--deep-earth);
}

.btn-accent:hover {
  background: #8FBE01;
}

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

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

.btn-block {
  width: 100%;
  display: block;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ============================================
   Forms & Inputs
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-family: 'Cairo', sans-serif;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--forest-green);
}

.form-control {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--light-sage);
  border-radius: var(--radius-md);
  font-family: 'Tajawal', sans-serif;
  font-size: 1rem;
  transition: var(--transition);
  background: var(--white);
  direction: rtl;
}

.form-control:focus {
  outline: none;
  border-color: var(--forest-green);
  box-shadow: 0 0 0 3px rgba(30, 86, 49, 0.1);
}

.form-control::placeholder {
  color: #999;
}

.form-text {
  font-size: 0.875rem;
  color: #666;
  margin-top: var(--spacing-xs);
}

.form-error {
  color: var(--error);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: none;
}

.form-error.active {
  display: block;
}

/* OTP Input Styling */
.otp-input-group {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  direction: ltr;
}

.otp-input {
  width: 50px;
  height: 60px;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  border: 2px solid var(--light-sage);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.otp-input:focus {
  border-color: var(--forest-green);
  box-shadow: 0 0 0 3px rgba(30, 86, 49, 0.1);
  outline: none;
}

/* ============================================
   Alerts & Messages
   ============================================ */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: 'Cairo', sans-serif;
}

.alert-success {
  background: #e8f5e9;
  border-right: 4px solid var(--success);
  color: #1b5e20;
}

.alert-error {
  background: #ffebee;
  border-right: 4px solid var(--error);
  color: #b71c1c;
}

.alert-warning {
  background: #fff3e0;
  border-right: 4px solid var(--warning);
  color: #e65100;
}

.alert-info {
  background: #e3f2fd;
  border-right: 4px solid #1976d2;
  color: #0d47a1;
}

/* ============================================
   Loading Spinner
   ============================================ */
.spinner {
  border: 4px solid var(--light-sage);
  border-top: 4px solid var(--forest-green);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  display: none;
}

.loading-overlay.active {
  display: flex;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--forest-green);
  color: var(--white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
  color: var(--yellow-green);
  margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
  color: var(--cream);
}

.footer-section a:hover {
  color: var(--yellow-green);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-md);
  text-align: center;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

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

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

.hidden { display: none !important; }
.visible { display: block !important; }

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .navbar-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: var(--spacing-md) 0;
  }
  
  .navbar-menu.active {
    display: flex;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .otp-input {
    width: 40px;
    height: 50px;
    font-size: 1.25rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.25rem; }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .card {
    padding: var(--spacing-md);
  }
  
  .otp-input {
    width: 35px;
    height: 45px;
    font-size: 1.1rem;
  }
}
/* ============================================
   Access Warning Banner
   ============================================ */
.access-warning {
    background: linear-gradient(135deg, var(--warning) 0%, var(--warm-brown) 100%);
    color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    animation: slideDown 0.5s ease-out;
}

.warning-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.access-warning i.fa-lock {
    font-size: 2rem;
    opacity: 0.9;
}

.access-warning h3 {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.access-warning p {
    margin: 0;
    opacity: 0.95;
    font-size: 0.95rem;
}

.subscribe-btn {
    margin-right: auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--white);
    color: var(--warm-brown);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
}

.subscribe-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .warning-content {
        flex-direction: column;
        text-align: center;
    }
    
    .subscribe-btn {
        margin: var(--spacing-sm) auto 0;
    }
}