/* ========================================
   Organizasyon - Minimal Clean Design
   ======================================== */

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

:root {
    --white: #FFFFFF;
    --off-white: #FAFAFA;
    --black: #111111;
    --gray-100: #F5F5F5;
    --gray-200: #E5E5E5;
    --gray-300: #D4D4D4;
    --gray-400: #A3A3A3;
    --gray-500: #737373;
    --blue: #2563EB;
    --blue-hover: #1D4ED8;
    --blue-light: #EFF6FF;
    --green: #16A34A;
    --green-light: #F0FDF4;
    --red: #DC2626;
    --red-light: #FEF2F2;
    --orange: #EA580C;
    --orange-light: #FFF7ED;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --font: 'DM Sans', sans-serif;
    --transition: 0.2s ease;
}

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--font);
    color: var(--black);
    background: var(--white);
    line-height: 1.6;
    font-size: 16px;
}

a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; display: block; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* --- Navbar --- */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: var(--black);
    height: 64px; display: flex; align-items: center;
}

.navbar .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.navbar-brand { font-size: 18px; font-weight: 700; letter-spacing: -0.3px; color: #fff; display: flex; align-items: center; gap: 10px; }
.navbar-brand .brand-icon { width: 32px; height: 32px; background: var(--blue); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 14px; }

.navbar-nav { display: flex; align-items: center; gap: 28px; list-style: none; }
.navbar-nav a { font-size: 14px; font-weight: 500; color: rgba(255,255,255,0.6); }
.navbar-nav a:hover { color: #fff; }

.navbar-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; color: #fff; font-size: 24px; }

/* --- Buttons --- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    font-family: var(--font); font-size: 14px; font-weight: 600;
    padding: 10px 24px; border-radius: var(--radius); border: none;
    cursor: pointer; transition: all var(--transition); text-decoration: none;
}

.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-hover); color: var(--white); }
.btn-outline { background: transparent; color: var(--blue); border: 1px solid var(--blue); }
.btn-outline:hover { background: var(--blue); color: var(--white); }
.btn-white { background: var(--white); color: var(--blue); }
.btn-white:hover { background: var(--off-white); color: var(--blue); }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-danger { background: var(--red); color: var(--white); }
.btn-danger:hover { background: #B91C1C; color: var(--white); }
.btn-success { background: var(--green); color: var(--white); }
.btn-success:hover { background: #15803D; color: var(--white); }

/* --- Hero --- */
.hero { padding: 160px 0 80px; text-align: center; background: var(--white); }
.hero h1 { font-size: 48px; font-weight: 700; letter-spacing: -1.5px; line-height: 1.15; margin-bottom: 16px; }
.hero h1 span { color: var(--blue); }
.hero p { font-size: 18px; color: var(--gray-500); max-width: 480px; margin: 0 auto 40px; line-height: 1.6; }

/* --- Search Bar --- */
.search-bar {
    max-width: 640px; margin: 0 auto; display: flex; align-items: center;
    border: 1px solid var(--gray-200); border-radius: var(--radius); overflow: hidden; background: var(--white);
}

.search-bar select {
    flex: 1; padding: 14px 16px; border: none; font-family: var(--font); font-size: 14px;
    color: var(--black); background: var(--white); appearance: none; -webkit-appearance: none;
    outline: none; cursor: pointer; border-right: 1px solid var(--gray-200);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23737373' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 12px center; padding-right: 32px;
}

.search-bar select:last-of-type { border-right: none; }
.search-bar .btn { border-radius: 0; padding: 14px 28px; white-space: nowrap; flex-shrink: 0; }

/* --- Section Common --- */
.section { padding: 120px 0; }
.section-divider { border: none; border-top: 1px solid var(--gray-200); margin: 0; }
.section-title { font-size: 32px; font-weight: 700; letter-spacing: -0.8px; margin-bottom: 16px; text-align: center; }
.section-subtitle { font-size: 16px; color: var(--gray-500); text-align: center; margin-bottom: 64px; }

/* --- Event Types Grid --- */
.events-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; max-width: 720px; margin: 0 auto; }
.event-item { display: flex; align-items: center; gap: 12px; padding: 20px 16px; cursor: pointer; transition: color var(--transition); font-size: 15px; font-weight: 500; color: var(--gray-500); }
.event-item i { font-size: 18px; color: var(--black); transition: color var(--transition); }
.event-item:hover { color: var(--blue); }
.event-item:hover i { color: var(--blue); }

/* --- How It Works --- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; position: relative; }
.steps::before { content: ''; position: absolute; top: 28px; left: calc(16.66% + 24px); right: calc(16.66% + 24px); height: 1px; background: var(--gray-200); }
.step { text-align: center; position: relative; }
.step-number { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; font-size: 24px; font-weight: 700; color: var(--blue); background: var(--white); position: relative; z-index: 1; margin-bottom: 24px; }
.step h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.2px; }
.step p { font-size: 14px; color: var(--gray-500); line-height: 1.6; max-width: 240px; margin: 0 auto; }

/* --- Stats --- */
.stats-section { background: var(--off-white); }
.stats-row { display: flex; justify-content: center; gap: 120px; }
.stat-item { text-align: center; }
.stat-number { font-size: 40px; font-weight: 700; letter-spacing: -1px; color: var(--black); line-height: 1; margin-bottom: 8px; }
.stat-label { font-size: 14px; color: var(--gray-500); }

/* --- CTA --- */
.cta-section { background: var(--blue); padding: 96px 0; text-align: center; }
.cta-section h2 { font-size: 32px; font-weight: 700; color: var(--white); margin-bottom: 16px; letter-spacing: -0.8px; }
.cta-section p { font-size: 16px; color: rgba(255,255,255,0.75); margin-bottom: 32px; }

/* --- Footer --- */
.footer { background: var(--off-white); padding: 48px 0; border-top: 1px solid var(--gray-200); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; }
.footer-brand { font-size: 16px; font-weight: 700; color: var(--black); }
.footer-links { display: flex; gap: 24px; list-style: none; }
.footer-links a { font-size: 13px; color: var(--gray-500); }
.footer-links a:hover { color: var(--black); }
.footer-copy { text-align: center; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--gray-200); font-size: 12px; color: var(--gray-400); }

/* --- Animations --- */
.fade-in { opacity: 0; transform: translateY(12px); transition: opacity 0.5s ease, transform 0.5s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* --- Responsive --- */
@media (max-width: 768px) {
    .hero { padding: 120px 0 64px; }
    .hero h1 { font-size: 32px; letter-spacing: -1px; }
    .hero p { font-size: 16px; }
    .search-bar { flex-direction: column; }
    .search-bar select { border-right: none; border-bottom: 1px solid var(--gray-200); width: 100%; }
    .search-bar select:last-of-type { border-bottom: none; }
    .search-bar .btn { width: 100%; border-radius: 0 0 var(--radius) var(--radius); }
    .section { padding: 80px 0; }
    .events-grid { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: 1fr; gap: 40px; }
    .steps::before { display: none; }
    .stats-row { flex-direction: column; gap: 40px; align-items: center; }
    .cta-section { padding: 64px 0; }
    .cta-section h2 { font-size: 24px; }
    .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
    .navbar-nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--black); border-bottom: 1px solid rgba(255,255,255,0.1); flex-direction: column; padding: 24px; gap: 16px; }
    .navbar-nav.active { display: flex; }
    .navbar-toggle { display: block; }
    .section-title { font-size: 24px; }
    .stat-number { font-size: 32px; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 28px; }
    .events-grid { grid-template-columns: 1fr 1fr; }
    .event-item { padding: 16px 8px; font-size: 13px; gap: 8px; }
    .event-item i { font-size: 16px; }
    .stats-row { gap: 32px; }
}