body {
    background-color: #f4f7f6;
    color: #333;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Üst Duyuru Şeridi */
.announcement-bar {
    background: #2e7d32;
    color: #fff;
    text-align: center;
    padding: 8px;
    font-size: 0.85rem;
    font-weight: 500;
}

header {
    background: #fff;
    padding: 15px 40px;
    border-bottom: 2px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area { display: flex; align-items: center; gap: 15px; }
.logo-area img { height: 35px; }
.logo-area span { color: #666; font-size: 0.85rem; font-weight: bold; }

.header-status {
    font-size: 0.8rem;
    color: #2e7d32;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: bold;
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: #2e7d32;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px rgba(46, 125, 50, 0.6);
}

nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 20px;
    background: #fff;
    border-bottom: 1px solid #eee;
}

nav button {
    padding: 10px 25px;
    border: none;
    background: #e8ecef;
    cursor: pointer;
    font-weight: bold;
    border-radius: 6px;
    transition: all 0.3s ease;
    color: #495057;
}

nav button.active { background: #2e7d32; color: #fff; }
nav button:hover { background: #d32f2f; color: #fff; }

main {
    flex: 1;
    max-width: 800px;
    margin: 40px auto;
    width: 90%;
}

.section-content { display: none; background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); }
.section-content.active { display: block; animation: fadeIn 0.4s ease; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }

/* Welcome Ekranı Tasarımı */
.hero-container {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 30px;
}

.main-visual { width: 140px; height: 140px; border-radius: 50%; object-fit: cover; border: 3px solid #2e7d32; }
.hero-text h2 { color: #2e7d32; margin-bottom: 10px; }

.features { display: flex; gap: 15px; margin-top: 15px; flex-wrap: wrap; }
.feature-item { padding: 6px 12px; background: #e8f5e9; color: #2e7d32; border-radius: 4px; font-size: 0.85rem; font-weight: bold; }

/* İstatistik Kartları */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 30px;
    border-top: 1px solid #eee;
    padding-top: 25px;
}

.stat-card {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    border-bottom: 3px solid #2e7d32;
}

.stat-card h3 { color: #2e7d32; font-size: 1.2rem; margin-bottom: 5px; }
.stat-card p { color: #666; font-size: 0.8rem; margin: 0; }

/* About & SSS */
.about-box { border-left: 4px solid #d32f2f; padding-left: 20px; background: #fff5f5; padding: 15px 20px; border-radius: 0 8px 8px 0; margin-bottom: 30px; }
.sub-heading { color: #333; margin: 30px 0 15px 0; font-size: 1.1rem; }

.faq-container { display: flex; flex-direction: column; gap: 10px; }
.faq-item { border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden; }
.faq-question {
    width: 100%;
    padding: 12px 15px;
    background: #f8f9fa;
    border: none;
    text-align: left;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #333;
}
.faq-question:hover { background: #e9ecef; }
.faq-answer { padding: 0 15px; max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease; background: #fff; }
.faq-answer p { margin: 12px 0; color: #666; font-size: 0.9rem; }

/* Participation Bölümü */
.contact-card { margin: 20px 0; padding: 20px; background: #2e7d32; border-radius: 8px; text-align: center; }
.contact-card a { color: #fff; font-weight: bold; text-decoration: none; font-size: 1.1rem; }
.contact-card:hover { background: #235c27; }
.note { font-size: 0.85rem; color: #888; text-align: center; }

footer {
    text-align: center;
    padding: 20px;
    font-size: 0.8rem;
    color: #888;
    background: #fff;
    border-top: 1px solid #eee;
}