/* =============================================
   ÖZŞEN KOLEJİ - Design Tokens & Base Styles
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700;800;900&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --primary:       #1B4D8E;
  --primary-dark:  #153d72;
  --primary-light: #2563ae;
  --primary-50:    rgba(27, 77, 142, 0.08);
  --secondary:     #F5A623;
  --secondary-dark:#d4901e;
  --accent:        #2ECC71;
  --accent-dark:   #27ae60;
  --dark:          #0d1b35;
  --dark-2:        #1e2d4f;
  --text:          #3d4a5c;
  --text-light:    #7a8899;
  --border:        #e8ecf0;
  --bg:            #F8F9FA;
  --bg-2:          #f0f4f8;
  --white:         #ffffff;

  --shadow-xs: 0 1px 4px rgba(0,0,0,0.06);
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.14);

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  22px;
  --radius-xl:  32px;

  --transition: all 0.3s ease;
  --transition-fast: all 0.18s ease;

  --font-heading: 'Montserrat', sans-serif;
  --font-body:    'Inter', sans-serif;

  --navbar-height: 80px;
  --topbar-height: 42px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.25;
}

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

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

img { max-width: 100%; display: block; }

/* ---- Bootstrap Overrides ---- */
.btn {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.3px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}
.btn-primary:hover, .btn-primary:focus {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: 0 4px 16px rgba(27, 77, 142, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--secondary);
  border-color: var(--secondary);
  color: var(--dark);
}
.btn-secondary:hover, .btn-secondary:focus {
  background-color: var(--secondary-dark);
  border-color: var(--secondary-dark);
  color: var(--dark);
  box-shadow: 0 4px 16px rgba(245, 166, 35, 0.35);
  transform: translateY(-1px);
}

.btn-outline-primary {
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline-primary:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(27, 77, 142, 0.25);
}

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

.btn-lg { padding: 0.75rem 2rem; font-size: 1rem; }
.btn-sm { padding: 0.4rem 1rem; font-size: 0.875rem; }

/* ---- Color Utilities ---- */
.text-primary  { color: var(--primary)   !important; }
.text-secondary{ color: var(--secondary) !important; }
.text-accent   { color: var(--accent)    !important; }
.text-dark-2   { color: var(--dark)      !important; }
.text-muted    { color: var(--text-light)!important; }

.bg-primary   { background-color: var(--primary)   !important; }
.bg-secondary { background-color: var(--secondary) !important; }
.bg-accent    { background-color: var(--accent)    !important; }
.bg-light     { background-color: var(--bg)        !important; }
.bg-dark-2    { background-color: var(--dark)      !important; }

/* ---- Section Layout ---- */
.section-padding   { padding: 90px 0; }
.section-padding-sm{ padding: 60px 0; }

.section-label {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--secondary);
  background: rgba(245, 166, 35, 0.10);
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 600px;
  line-height: 1.8;
}

.section-divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  margin: 16px 0 28px;
}

.section-divider.center { margin-left: auto; margin-right: auto; }

/* ---- Card base ---- */
.card {
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: hidden;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

/* ---- Scrolled to top ---- */
body.has-topbar { padding-top: calc(var(--navbar-height) + var(--topbar-height)); }
body.no-topbar  { padding-top: var(--navbar-height); }

/* ---- Page Header (inner pages) ---- */
.page-header {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 60%, var(--primary) 100%);
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

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

.page-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.page-header .breadcrumb {
  background: transparent;
  padding: 0;
  margin: 0;
}

.page-header .breadcrumb-item,
.page-header .breadcrumb-item a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}

.page-header .breadcrumb-item.active { color: var(--secondary); }
.page-header .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.4); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .section-padding    { padding: 60px 0; }
  .section-padding-sm { padding: 40px 0; }
  .page-header        { padding: 60px 0 40px; }
}