/* Genel Stil Ayarları */
:root {
    --primary-color: #2980b9;
    --secondary-color: #7f8c9f;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --bg-color: #f5f7f9;
    --card-bg: #ffffff;
    --text-color: #2c3e50;
    --border-color: #e0e6ed;
    --shadow-color-light: rgba(0, 0, 0, 0.05);
    --shadow-color-medium: rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Inter', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1100px;
    margin: 30px auto;
    padding: 40px;
    background-color: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 8px 30px var(--shadow-color-light);
}

/* Üst Navigasyon Çubuğu */
.top-nav {
    background-color: var(--card-bg);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px var(--shadow-color-light);
    border-bottom: 1px solid var(--border-color);
}
.top-nav h2, .customer-header .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
}
.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s;
}
.nav-links a:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

/* Müşteri Header Tasarımı */
.customer-header {
    background-color: var(--card-bg);
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 15px var(--shadow-color-light);
}
.customer-header .logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}
.customer-header .nav-links {
    display: flex;
    gap: 30px;
}
.customer-header .nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}
.customer-header .nav-links a:hover {
    color: var(--primary-color);
}
.customer-header .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
}

/* Tipografi */
h1, h2, h3 {
    font-weight: 600;
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    text-align: center;
    color: var(--primary-color);
}

p {
    color: var(--secondary-color);
}

/* Form ve Giriş Alanları */
.form-group { margin-bottom: 1.5rem; }
label { display: block; margin-bottom: 0.5rem; font-weight: 500; }
input[type="text"], input[type="email"], input[type="password"], input[type="number"], input[type="tel"], textarea, select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus, textarea:focus, select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 1px var(--primary-color);
    outline: none;
}

/* Butonlar */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 1rem;
    cursor: pointer;
    text-align: center;
    border: none;
    transition: background-color 0.2s, box-shadow 0.2s;
    font-weight: 600;
}
.btn-primary { background-color: var(--primary-color); color: #fff; }
.btn-primary:hover { background-color: #2574a9; box-shadow: 0 2px 8px rgba(41, 122, 179, 0.4); }
.btn-success { background-color: var(--success-color); color: #fff; }
.btn-success:hover { background-color: #218838; box-shadow: 0 2px 8px rgba(46, 204, 113, 0.4); }
.btn-secondary { background-color: var(--secondary-color); color: #fff; }
.btn-secondary:hover { background-color: #8c95a5; box-shadow: 0 2px 8px rgba(149, 165, 166, 0.4); }

/* Dashboard ve Metrikler */
.dashboard-metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}
.metric-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 15px var(--shadow-color-light);
    text-align: center;
}
.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-top: 10px;
}
.metric-label {
    margin: 0;
    color: var(--secondary-color);
    font-size: 1rem;
}

/* Diğer Bileşenler */
table { width: 100%; border-collapse: collapse; margin-top: 1.5rem; border-radius: 8px; overflow: hidden; }
th, td { padding: 15px; text-align: left; border-bottom: 1px solid var(--border-color); }
th { background-color: var(--bg-color); font-weight: 600; }
tr:hover { background-color: var(--bg-color); }

.status-badge { padding: 6px 10px; border-radius: 20px; color: white; font-size: 0.9rem; font-weight: 600; }
.status-new { background-color: #f1c40f; }
.status-in_progress { background-color: var(--primary-color); }
.status-completed { background-color: var(--success-color); }

/* Ürün ve Kategori Kartları */
.product-list, .category-list, .top-sellers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}
.product-item, .category-item {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    text-align: center;
    background-color: var(--card-bg);
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
}
.product-item:hover, .category-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px var(--shadow-color-medium);
}
.product-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}
.item-content {
    padding: 15px;
    flex-grow: 1;
}
.item-title {
    font-weight: 600;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}
.item-price {
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--text-color);
}
.add-to-cart-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--success-color);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background-color 0.2s;
}
.add-to-cart-btn:hover {
    background-color: #218838;
}
.top-seller-item img {
    height: 150px;
}
.product-image-thumbnail {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 4px;
    transition: transform 0.2s ease-in-out;
    cursor: pointer;
}
.product-image-thumbnail:hover {
    transform: scale(2);
}

/* Ana Sayfa Özel Stili */
.homepage-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
    min-height: 100vh;
    padding: 20px;
    background-color: var(--bg-color);
}
.homepage-container .card {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 30px var(--shadow-color-light);
    max-width: 600px;
}
.homepage-container h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}
.homepage-container p {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}
.homepage-container .link-container {
    display: flex;
    gap: 20px;
    justify-content: center;
}
/* Mobil Uyumluluk */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    .container {
        padding: 20px;
    }
    .product-list, .category-list, .top-sellers-grid, .dashboard-metrics-grid {
        grid-template-columns: 1fr;
    }
    .top-sellers-grid {
        display: flex;
        flex-direction: column;
    }
    .link-container {
        flex-direction: column;
        gap: 10px;
    }
    .top-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding: 15px;
    }
    .top-nav .nav-links {
        flex-direction: column;
        gap: 5px;
        align-items: flex-start;
    }
    .homepage-container h1 {
        font-size: 1.5rem;
    }
    .homepage-container p {
        font-size: 1rem;
    }
    .customer-header {
        flex-direction: column;
        gap: 10px;
        padding: 15px;
    }
    .customer-header .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 10px;
        width: 100%;
    }
    .customer-header .nav-links a {
        width: 100%;
        text-align: center;
    }
    .login-container .login-card {
        padding: 30px 20px;
    }
}