/* ============================================
   FAZLA MESAİ YÖNETİM SİSTEMİ
   Premium Kurumsal Tasarım - Mobil Uyumlu
   Renkler: Turkuaz, Beyaz, Mavi, Altın, Bordo
============================================ */

/* Temel Değişkenler */
:root {
    --white: #ffffff;
    --turkuaz-acik: #4DD0E1;
    --turkuaz-koyu: #00ACC1;
    --lacivert: #1A2A4F;
    --altin: #C9A03D;
    --bordo: #6B1D2E;
    --gri-acik: #F8F9FA;
    --gri-orta: #E9ECEF;
    --gri-koyu: #6C757D;
    --siyah: #212529;
    --shadow: 0 10px 40px rgba(0,0,0,0.08);
    --shadow-hover: 0 20px 50px rgba(0,0,0,0.12);
    --border-radius: 16px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', 'Roboto', sans-serif;
    background: linear-gradient(135deg, var(--gri-acik) 0%, var(--white) 100%);
    color: var(--siyah);
    line-height: 1.6;
    min-height: 100vh;
}

/* Tipografi */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', 'Montserrat', sans-serif;
    font-weight: 600;
    color: var(--lacivert);
}

/* Container Responsive */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Kartlar */
.card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 24px;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.03);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

/* Butonlar */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 500;
    font-size: 14px;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--turkuaz-acik), var(--turkuaz-koyu));
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,172,193,0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--turkuaz-koyu);
    color: var(--turkuaz-koyu);
}

.btn-outline:hover {
    background: var(--turkuaz-acik);
    border-color: var(--turkuaz-acik);
    color: var(--white);
}

.btn-danger {
    background: var(--bordo);
    color: var(--white);
}

.btn-danger:hover {
    background: #8B2A3E;
    transform: translateY(-2px);
}

.btn-success {
    background: var(--altin);
    color: var(--lacivert);
}

.btn-success:hover {
    background: #D4AF37;
    transform: translateY(-2px);
}

/* Form Elemanları */
input, select, textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--gri-orta);
    border-radius: 12px;
    font-size: 15px;
    transition: var(--transition);
    font-family: inherit;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--turkuaz-koyu);
    box-shadow: 0 0 0 3px rgba(0,172,193,0.1);
}

label {
    font-weight: 500;
    margin-bottom: 8px;
    display: block;
    color: var(--lacivert);
}

/* Tablolar - Mobil Uyumlu */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
}

th, td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gri-orta);
}

th {
    background: var(--lacivert);
    color: var(--white);
    font-weight: 500;
}

tr:hover {
    background: var(--gri-acik);
}

/* Sidebar (Admin Paneli) */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100%;
    background: var(--lacivert);
    padding: 30px 20px;
    transition: var(--transition);
    z-index: 1000;
    overflow-y: auto;
}

.sidebar .logo {
    color: var(--altin);
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 40px;
    word-break: break-word;
}

.sidebar .logo small {
    font-size: 11px;
    color: var(--gri-koyu);
}

.sidebar .menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--white);
    text-decoration: none;
    border-radius: 12px;
    margin-bottom: 8px;
    transition: var(--transition);
}

.sidebar .menu-item:hover,
.sidebar .menu-item.active {
    background: var(--turkuaz-koyu);
    transform: translateX(8px);
}

.main-content {
    margin-left: 280px;
    padding: 20px;
    min-height: 100vh;
}

/* Mobil Uyum */
.hamburger {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1100;
    background: var(--turkuaz-koyu);
    border: none;
    padding: 12px 16px;
    border-radius: 8px;
    color: white;
    font-size: 20px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: 260px;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 60px 16px 16px 16px;
    }
    
    .hamburger {
        display: block;
    }
    
    .card {
        padding: 16px;
    }
    
    th, td {
        padding: 10px 12px;
        font-size: 13px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 13px;
    }
}

@media (min-width: 769px) {
    .hamburger {
        display: none;
    }
}

/* Toast Bildirimleri */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--white);
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    z-index: 9999;
    animation: slideInRight 0.3s ease;
    border-left: 4px solid var(--turkuaz-koyu);
}

.toast.success {
    border-left-color: var(--altin);
}

.toast.error {
    border-left-color: var(--bordo);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Tayin Uyarı Banner */
.alert-warning {
    background: linear-gradient(135deg, #FFF8E7, #FFE6B3);
    border-left: 5px solid var(--altin);
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    color: var(--lacivert);
}

/* Yüklenme Animasyonu */
.loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--gri-orta);
    border-top-color: var(--turkuaz-koyu);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Giriş Sayfası Dalgalı Arka Plan */
.wave-bg {
    background: linear-gradient(180deg, var(--white) 0%, var(--turkuaz-acik) 100%);
    position: relative;
    overflow: hidden;
}

.wave-bg::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%2300ACC1" fill-opacity="0.1" d="M0,192L48,197.3C96,203,192,213,288,208C384,203,480,181,576,181.3C672,181,768,203,864,208C960,213,1056,203,1152,186.7C1248,171,1344,149,1392,138.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') repeat-x;
    background-size: cover;
    animation: wave 10s linear infinite;
}

@keyframes wave {
    0% { background-position-x: 0; }
    100% { background-position-x: 1440px; }
}

/* Yardımcı Sınıflar */
.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }