/* ===== GENERAL STYLES ===== */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
}

html {
    min-height: 100%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

/* ===== NAVBAR ===== */
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    transition: all 0.3s ease;
}

    .navbar-nav .nav-link:hover {
        transform: translateY(-2px);
    }

/* ===== BUTTONS ===== */
.btn {
    transition: all 0.3s ease;
}

    .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    }

/* ===== CARDS ===== */
.card {
    transition: all 0.3s ease;
    border-radius: 10px;
}

    .card:hover {
        box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    }

.card-img-top {
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

/* ===== BOOK CARD ===== */
.book-card {
    height: 100%;
}

    .book-card img {
        height: 300px;
        object-fit: cover;
        width: 100%;
    }

    .book-card .card-title {
        height: 2.5em;
        overflow: hidden;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
    }

/* ===== JUMBOTRON ===== */
.jumbotron {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
}

/* ===== FOOTER ===== */
footer {
    width: 100%;
    margin-top: 3rem;
}

    footer a {
        text-decoration: none;
        transition: color 0.3s ease;
    }

        footer a:hover {
            color: #ffffff !important;
        }

/* ===== TABLE ===== */
.table-hover tbody tr:hover {
    background-color: #f8f9fa;
}

/* ===== FORM ===== */
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* ===== BADGE ===== */
.badge {
    font-size: 0.75rem;
}

/* ===== CART COUNT BADGE ===== */
#cart-count {
    font-size: 0.7rem;
    padding: 0.25em 0.5em;
}

/* ===== ALERTS ===== */
.alert {
    border-radius: 10px;
}

/* ===== LOADING SPINNER ===== */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .book-card img {
        height: 250px;
    }

    .jumbotron {
        padding: 2rem 1rem !important;
    }

        .jumbotron h1 {
            font-size: 2rem;
        }
}

/* ===== ANIMATION ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

/* ===== HOVER EFFECTS ===== */
.hover-shadow {
    transition: all 0.3s ease;
}

    .hover-shadow:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 20px rgba(0,0,0,0.2) !important;
    }

/* ===== TEXT TRUNCATE ===== */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.text-truncate-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== PRICE ===== */
.price {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--danger-color);
}

/* ===== ADMIN SIDEBAR ===== */
.admin-sidebar {
    min-height: calc(100vh - 60px);
    background-color: #343a40;
}

    .admin-sidebar .nav-link {
        color: #ffffff;
        padding: 1rem;
        border-radius: 5px;
        margin: 0.25rem 0;
    }

        .admin-sidebar .nav-link:hover,
        .admin-sidebar .nav-link.active {
            background-color: var(--primary-color);
        }

/* ===== SEARCH BAR ===== */
.search-container {
    max-width: 500px;
}

/* ===== CATEGORY BADGE ===== */
.category-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 20px;
    margin: 0.25rem;
    transition: all 0.3s ease;
}

    .category-badge:hover {
        background-color: var(--secondary-color);
        transform: scale(1.05);
    }

/* ===== STATUS BADGES ===== */
.status-pending {
    background-color: var(--warning-color);
}

.status-processing {
    background-color: var(--info-color);
}

.status-completed {
    background-color: var(--success-color);
}

.status-cancelled {
    background-color: var(--danger-color);
}