/* Temel Sıfırlamalar ve Değişkenler */
:root {
    --primary-color: #1b5e20; /* Dernek Logosu Yeşil Tonu */
    --primary-hover: #2e7d32;
    --secondary-color: #37474f;
    --text-color: #263238;
    --bg-light: #ffffff; /* Temiz entegrasyon için saf beyaz taban */
    --border-color: #e0e0e0;
    --radius: 8px; /* Yumuşak modern hatlar */
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-color);
    line-height: 1.5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigasyon Tasarımı */
.main-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

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

.logo-title {
    display: block;
    font-weight: 800;
    color: var(--primary-color);
    font-size: 1.1rem;
    letter-spacing: 0.5px;
}

.logo-subtitle {
    display: block;
    font-size: 0.85rem;
    color: var(--secondary-color);
    font-weight: 600;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-color);
    margin-left: 20px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.main-nav a:hover, .main-nav a.active {
    color: var(--primary-color);
}

/* Buton Standartları */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    font-size: 0.95rem;
}

.btn-primary { background: var(--primary-color); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-outline { border-color: var(--primary-color); color: var(--primary-color); }
.btn-outline:hover { background: var(--primary-color); color: #fff; }
.btn-block { display: block; width: 100%; text-align: center; }

/* Esnek / Tam Genişlikte Form Mimarisi (Auth) */
.auth-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: #ffffff;
}

.auth-container {
    width: 100%;
    max-width: 750px; /* Sıkışık kart yerine geniş, ferah alan */
    padding: 30px;
}

.auth-header {
    text-align: center;
    margin-bottom: 35px;
}

.auth-header h2 {
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 10px;
}

.responsive-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

@media (max-width: 768px) {
    .form-row { flex-direction: column; gap: 20px; }
    .header-wrapper { flex-direction: column; gap: 15px; }
    .main-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
    .main-nav a { margin: 0 10px; }
}

label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--secondary-color);
}

input, select {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    outline: none;
    font-size: 1rem;
    color: var(--text-color);
    background-color: #fff;
    transition: border-color 0.2s;
}

input:focus, select:focus {
    border-color: var(--primary-color);
}

/* Hero & İstatistik Izgarası */
.hero-section {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, #f1f8e9 0%, #ffffff 100%);
}

.hero-content h1 { font-size: 2.8rem; color: var(--primary-color); margin-bottom: 20px; font-weight: 800; }
.hero-content p { font-size: 1.2rem; max-width: 700px; margin: 0 auto 40px; color: var(--secondary-color); }
.hero-buttons { display: flex; justify-content: center; gap: 20px; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1-fr));
    gap: 30px;
    padding: 60px 0;
}

.stat-card {
    text-align: center;
    padding: 30px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
}

.stat-card h3 { font-size: 2.2rem; color: var(--primary-color); margin-bottom: 5px; }
.auth-footer { text-align: center; margin-top: 15px; font-size: 0.9rem; }
.auth-footer a { color: var(--primary-color); text-decoration: none; font-weight: 600; }

/* Panel İçi Form Ortak Alanları */
.form-container-shared {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    width: 100%;
}

.form-header-shared {
    margin-bottom: 25px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.form-header-shared h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.form-header-shared p {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

textarea {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    outline: none;
    font-size: 1rem;
    color: var(--text-color);
    resize: vertical;
}

textarea:focus {
    border-color: var(--primary-color);
}

/* Şık Bilgilendirme Kutuları (Alerts) */
.alert {
    padding: 16px 20px;
    margin-bottom: 25px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    line-height: 1.5;
    text-align: center;
    animation: fadeIn 0.5s ease-in-out;
}

.alert strong {
    display: block;
    font-size: 1.05rem;
    margin-bottom: 5px;
}

.alert-success {
    background-color: #e8f5e9; /* Çok açık yeşil arka plan */
    color: #1b5e20; /* Dernek koyu yeşil metin rengi */
    border: 1px solid #c8e6c9;
}

/* Hafif giriş animasyonu */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}