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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background: linear-gradient(135deg, #f8f9ff 0%, #e8ecff 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo svg {
    width: 100%;
    height: 100%;
}

.school-info h1 {
    font-size: 1.5rem;
    margin-bottom: 5px;
    color: #ffd700;
}

.school-info p {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Navigation */
nav {
    background: rgba(255, 215, 0, 0.1);
    padding: 1rem 0;
    border-bottom: 2px solid #ffd700;
}

.nav-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.nav-item {
    padding: 10px 20px;
    background: white;
    border: 2px solid #2c3e50;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    color: #2c3e50;
}

.nav-item:hover, .nav-item.active {
    background: #2c3e50;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(44, 62, 80, 0.3);
}

/* Main Content */
main {
    padding: 2rem 0;
}

.content-section {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

.content-section.active {
    display: block;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
    border-radius: 15px;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffd700" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

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

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #ffd700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    border-left: 5px solid #ffd700;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.card p {
    color: #666;
    line-height: 1.8;
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    border-top: 5px solid #2c3e50;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #ffd700;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #2c3e50;
    font-weight: 500;
}

/* Form Placeholder */
.form-placeholder {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    border: 2px dashed #ffd700;
}

.form-placeholder h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.form-placeholder p {
    color: #666;
    margin-bottom: 2rem;
}

.btn {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(44, 62, 80, 0.3);
}

/* Footer */
footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: #ffd700;
    margin-bottom: 1rem;
}

.footer-section p, .footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    line-height: 1.8;
}

.footer-section a:hover {
    color: #ffd700;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-container {
        gap: 10px;
    }

    .nav-item {
        padding: 8px 15px;
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }
}

/* Duyuru Meta Bilgileri */
.duyuru-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
    font-size: 0.9rem;
}

.duyuru-yazar, .duyuru-tarih {
    color: #888;
    font-weight: 500;
}

.duyuru-yazar {
    color: #2c3e50;
}

.duyuru-tarih {
    color: #666;
}

/* Mobil uyumluluk */
@media (max-width: 768px) {
    .duyuru-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}