/* 0. Smooth scroll for anchor links */
html {
  scroll-behavior: smooth;
}

/* 1. CSS Variables & Fonts */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@600&family=Roboto&display=swap');

:root {
  --primary:       #0053ba;
  --secondary:     #e83e8c;
  --gray-light:    #f8f9fa;
  --font-heading:  'Montserrat', sans-serif;
  --font-body:     'Roboto', sans-serif;
}

/* 2. Base Styles */
body {
  font-family: var(--font-body);
  background-color: var(--gray-light);
  margin: 0;
  padding: 0;
}
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-heading);
}

/* 3. Navbar — biraz daha koyu ton */
.navbar {
  background: linear-gradient(to right, #2b3990, #1565C0) !important;
  padding: 1rem 0;
}

.navbar-brand {
  color: white !important;
}

.nav-link {
  color: rgba(255, 255, 255, 0.9) !important;
  font-weight: 500;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  margin: 0 0.2rem;
  transition: all 0.3s ease;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white !important;
  transform: translateY(-1px);
}

.nav-link.active {
  background: rgba(255, 255, 255, 0.2);
  color: white !important;
}

.nav-link i {
  font-size: 1.1rem;
  margin-right: 0.5rem;
  transition: transform 0.3s ease;
}

.nav-link:hover i {
  transform: scale(1.1) rotate(-5deg);
}

/* 4. Buttons */
.btn-primary {
  background-color: var(--primary);
  border-color: var(--primary);
  transition: filter .2s, transform .2s;
}
.btn-primary:hover,
.btn-primary:focus {
  filter: brightness(1.1);
}
.btn-success {
  background-color: var(--secondary);
  border-color: var(--secondary);
  transition: filter .2s;
}
.btn-success:hover,
.btn-success:focus {
  filter: brightness(1.1);
}
.btn-outline-light:hover {
  background-color: rgba(255,255,255,0.1);
  /* later override below for Learn More */
}

/* 5. Forms */
.form-control {
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  padding: 0.7rem 1rem;
}

.form-control::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.form-control:focus {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  color: white;
  box-shadow: none;
}

.btn-light {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

/* 6. Cards & Alerts */
.card {
  border: none;
  border-radius: .5rem;
}
.shadow-sm {
  box-shadow: 0 .125rem .25rem rgba(0,0,0,.075) !important;
}
.alert {
  border-radius: .25rem;
}

/* 7. Footer */
footer {
  font-size: .9rem;
  color: #6c757d;
  background: white;
  border-top: 1px solid var(--gray-200);
  box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.05);
}

footer .footer-brand {
  color: var(--gray-900);
}

footer h6 {
  color: var(--gray-800);
  font-weight: 600;
  margin-bottom: 1.25rem;
}

footer .nav-link {
  padding: 0.4rem 0;
  transition: all 0.2s ease;
  color: var(--gray-600) !important;
}

footer .nav-link:hover {
  color: var(--primary-600) !important;
  transform: translateX(5px);
}

footer .form-control {
  border: 1px solid var(--gray-200);
  background: white;
  color: var(--gray-700);
  padding: 0.7rem 1rem;
}

footer .form-control:focus {
  border-color: var(--primary-400);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
  background: white;
}

footer .btn-primary {
  padding: 0.7rem 1.5rem;
  background: linear-gradient(135deg, #2b3990 0%, #1565C0 100%);
  border: none;
  font-weight: 500;
}

/* Logout Link - Updated */
.nav-link.text-danger {
  color: rgba(255, 255, 255, 0.9) !important;
  transition: all 0.3s ease;
}

.nav-link.text-danger i {
  color: rgba(255, 255, 255, 0.9);
  transition: all 0.3s ease;
}

.nav-link.text-danger:hover {
  color: #ff4444 !important;
  background: rgba(255, 255, 255, 0.1);
}

.nav-link.text-danger:hover i {
  color: #ff4444;
  transform: scale(1.1) rotate(-5deg);
}

/* 8. Utility */
.mx-auto { margin: 0 auto !important; }


/* ↑↑↑ YOUR EXISTING CSS ENDS HERE ↑↑↑ */


/* 9. Hero Section tweaks */
.hero {
  padding-top: 4rem;
  padding-bottom: 4rem;
  /* if you want a full-height hero, you can also add:
  min-height: 60vh;
  display: flex;
  align-items: center;
  */
}

/* 10. Features / Flash-Card spacing */
.features {
  padding-top: 6rem;
}

/* 11. "Skeleton" fade-in animation for flash-cards */
.features .card.skeleton {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.features .card:not(.skeleton) {
  opacity: 1;
  transform: translateY(0);
}

/* 12. Learn More button hover polish */
.btn-outline-light:hover {
  background-color: rgba(255,255,255,0.15);
  border-color: #fff;
}

.welcome-section {
    position: relative;
    background: linear-gradient(135deg, #f5f7ff 0%, #ffffff 100%);
    background-image: 
        radial-gradient(#e6e9f5 1.5px, transparent 1.5px),
        radial-gradient(#e6e9f5 1.5px, transparent 1.5px);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
    overflow: hidden;
}

.welcome-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 100%);
    z-index: 1;
}

.welcome-section > * {
    position: relative;
    z-index: 2;
}

.btn-get-started {
    background: linear-gradient(45deg, #2b3990 0%, #1565C0 100%);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(43, 57, 144, 0.2);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-get-started::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255,255,255,0.1), rgba(255,255,255,0));
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.btn-get-started:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(43, 57, 144, 0.3);
    color: white;
}

.btn-get-started:hover::before {
    transform: translateX(100%);
}

.btn-learn-more {
    background: transparent;
    color: #2b3990;
    border: 2px solid #2b3990;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: 12px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-learn-more::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #2b3990, #1565C0);
    z-index: -1;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.btn-learn-more:hover {
    color: white;
    border-color: transparent;
}

.btn-learn-more:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.text-gradient {
    background: linear-gradient(120deg, #FFFFFF 0%, #E0E7FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    display: inline-block;
}

.animate-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s ease forwards;
}

.animate-up-delay {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s ease forwards 0.2s;
}

.animate-up-delay-2 {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s ease forwards 0.4s;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Profile Card Styles */
.profile-header {
  background: linear-gradient(to right bottom, #ffffff, #f8f9fa);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  margin-bottom: 2rem;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.profile-img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 4px solid white;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  object-fit: cover;
}

.btn-edit {
  background: white;
  border: 1px solid rgba(0, 0, 0, 0.1);
  color: #6c757d;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.btn-edit:hover {
  background: #f8f9fa;
  color: #212529;
  transform: translateY(-1px);
}

.profile-header h2 {
  font-size: 1.75rem;
  font-weight: 600;
  color: #212529;
  margin-bottom: 0.5rem;
}

.badge {
  background: rgba(var(--bs-primary-rgb), 0.1);
  color: var(--bs-primary);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
}

.social-links {
  margin-top: 1.5rem;
  display: flex;
  gap: 1rem;
}

.btn-github, .btn-linkedin {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-github {
  background: #24292e;
  color: white;
  border: none;
}

.btn-github:hover {
  background: #1b1f23;
  color: white;
  transform: translateY(-1px);
}

.btn-linkedin {
  background: #0a66c2;
  color: white;
  border: none;
}

.btn-linkedin:hover {
  background: #0958a8;
  color: white;
  transform: translateY(-1px);
}

.profile-stats {
  display: flex;
  gap: 2.5rem;
}

.profile-stats .stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 600;
  color: #212529;
  margin-bottom: 0.25rem;
}

.stat-label {
  color: #6c757d;
  font-size: 0.875rem;
}

/* Course View Button Styles */
.btn-view-course {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-600) 100%);
  color: white !important;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: none;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 2px 8px rgba(0, 83, 186, 0.2);
  opacity: 0.95;
}

.btn-view-course:hover {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  transform: translateY(-1px);
  color: white !important;
  box-shadow: 0 4px 12px rgba(0, 83, 186, 0.3);
  opacity: 1;
}