/* Google Fonts - Modern Geometrik Yazı Tipi */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&display=swap');

body {
    font-family: 'Inter', sans-serif;
    /* Canlı ve derin bir degrade arka plan */
    background: radial-gradient(circle at top left, #1e293b, #0f172a);
    height: 100vh;
    display: flex;
    align-items: center;
    color: #f8fafc;
}

/* Glassmorphism Kart Efekti */
.card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

h4 {
    font-weight: 600;
    letter-spacing: -0.5px;
    color: #fff;
    margin-bottom: 1.5rem !important;
}

/* Input Alanları Özelleştirme */
.form-control {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-radius: 12px;
    color: #fff !important;
    padding: 12px 15px;
    transition: all 0.3s ease;
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.08) !important;
    border-color: #3b82f6 !important;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

.form-control::placeholder {
    color: #94a3b8;
}

/* Modern Buton Tasarımı */
.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    border: none;
    border-radius: 12px;
    padding: 12px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin-top: 10px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.4);
}

/* Hata Mesajı */
.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #fca5a5;
    border-radius: 12px;
    font-size: 0.9rem;
}
/* Ay Kartları (Linkler) */
.month-card {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    color: #94a3b8 !important;
    text-decoration: none !important;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* Üzerine gelindiğinde efekt */
.month-card:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: #3b82f6;
    color: #fff !important;
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px -15px rgba(59, 130, 246, 0.3);
}
.text-primary{
    color: white!important;
}
/* Aktif ay efekti (isteğe bağlı vurgu) */
.month-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent,
        rgba(255, 255, 255, 0.05),
        transparent
    );
    transition: 0.5s;
}

.month-card:hover::before {
    left: 100%;
}

/* Mobilde 2'li, tablette 4'lü dizilim için Bootstrap düzenlemesi */
@media (max-width: 768px) {
    .row-cols-4 > * {
        flex: 0 0 auto;
        width: 50%;
    }
    .month-card {
        height: 80px;
        font-size: 1rem;
    }
}


.btn-outline-secondary{
    color: white;
    border: 1 px solid white;
}