:root {
    --sidebar-width: 260px;
    --navbar-height: 70px;
    --bg-color: #fdf2f4;
    --card-bg: #ffffff;
    --accent-color: #ff4d6d;
    --accent-hover: #ff758f;
    --text-color: #4a4a4a;
    --border-color: #fce1e5;
    --shadow: 0 4px 20px rgba(255, 77, 109, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

input, select, textarea, button {
    font-family: inherit;
    font-size: 1rem;
    color: inherit;
}

input[type="text"], 
input[type="email"], 
input[type="password"], 
select {
    height: 48px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 0 15px;
    width: 100%;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(255, 77, 109, 0.1);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    width: 100%;
    margin: 0;
}

#app-container {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: white;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 1000;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 2.5rem;
    color: var(--accent-color);
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-links {
    list-style: none;
    flex-grow: 1;
}

.nav-links li {
    margin-bottom: 0.5rem;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.8rem 1.2rem;
    text-decoration: none;
    color: #666;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-links a:hover, .nav-links li.active a {
    background: var(--bg-color);
    color: var(--accent-color);
}

/* Main Content Wrapper */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: var(--bg-color);
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    height: var(--navbar-height);
    background: white;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 2rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 900;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--accent-color);
}

/* Page Views */
.view-container {
    padding: 2.5rem;
    display: none;
    width: 100%;
}

.view-container.active {
    display: block;
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 15px;
}

.view-header h2 {
    font-size: 1.8rem;
    color: var(--text-color);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-color);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-color);
}

.nav-links a i {
    width: 20px;
    text-align: center;
}

.stat-info h4 {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.stat-info p {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* Common Components */
.btn-primary {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: var(--accent-color);
    color: white;
}

.btn-secondary {
    background: #fff0f3;
    color: var(--accent-color);
    border: 1px solid var(--border-color);
    padding: 0.8rem 1.2rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--bg-color);
    border-color: var(--accent-color);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    width: 90%;
    max-width: 600px;
    border-radius: 24px;
    padding: 2.5rem;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: #ccc;
}

/* Page List */
.data-table {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table-row {
    display: grid;
    padding: 1.2rem 1.5rem;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid var(--border-color);
}

.user-row {
    grid-template-columns: 60px 1fr 120px 120px 80px;
}

.page-row {
    grid-template-columns: 60px 1fr 120px 120px;
}

.table-header {
    background: #fafafa;
    font-weight: 700;
    color: #888;
    font-size: 0.85rem;
    text-transform: uppercase;
}

.media-stack {
    display: flex;
    gap: 6px;
    overflow: hidden;
}

.media-stack img, .media-stack video {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.action-btns {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.action-btn {
    padding: 6px;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    background: #f5f5f5;
    transition: 0.3s;
}

.edit-btn:hover { background: #e3f2fd; color: #1976d2; }
.delete-btn:hover { background: #ffebee; color: #d32f2f; }

/* Footer */
footer {
    padding: 2rem;
    text-align: center;
    color: #999;
    font-size: 0.9rem;
    margin-top: auto;
}

/* Mobile Responsiveness */
@media (max-width: 992px) {
    :root {
        --sidebar-width: 0px;
    }

    .sidebar {
        position: fixed;
        left: -280px;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        width: 280px;
        z-index: 2000;
        top: 0;
        height: 100vh;
    }

    .sidebar.active {
        left: 0;
        box-shadow: 10px 0 50px rgba(0,0,0,0.15);
    }

    .main-wrapper {
        margin-left: 0;
        width: 100%;
        min-height: 100vh;
    }

    .navbar {
        height: auto;
        min-height: var(--navbar-height);
        padding: 0.8rem 1rem;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }

    .user-profile {
        width: 100%;
        justify-content: space-between;
        font-size: 0.9rem;
    }

    #navUsername {
        max-width: 150px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .mobile-toggle {
        display: flex !important;
        align-items: center;
        justify-content: center;
        position: absolute;
        left: 0.8rem;
        top: 50%;
        transform: translateY(-50%);
        background: #fff0f3;
        border: 1px solid var(--border-color);
        color: var(--accent-color);
        width: 38px;
        height: 38px;
        border-radius: 10px;
        cursor: pointer;
        font-size: 1.1rem;
        transition: all 0.2s;
    }

    .mobile-toggle:active {
        background: var(--accent-color);
        color: white;
    }

    .navbar {
        padding-left: 3.5rem; /* Space for toggle */
    }

    .view-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
        margin-bottom: 1.5rem;
    }

    .view-header > div {
        width: 100%;
        justify-content: space-between !important;
        flex-wrap: wrap;
        gap: 10px;
    }

    .view-container {
        padding: 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .table-header {
        display: none;
    }

    .table-row {
        grid-template-columns: 1fr;
        padding: 1.5rem;
        position: relative;
        gap: 10px;
        background: #fff;
        border-radius: 15px;
        margin-bottom: 1rem;
        border: 1px solid var(--border-color);
    }

    .page-order-col::before { content: 'Order: '; font-weight: 700; color: #888; }
    .content-preview-col { 
        padding-top: 5px;
        border-top: 1px solid #f9f9f9;
        white-space: normal;
        max-height: none;
    }

    .media-stack-col {
        margin: 10px 0;
    }

    .media-stack img, .media-stack video {
        width: 60px;
        height: 60px;
    }

    .action-btns {
        justify-content: flex-start;
        padding-top: 10px;
        border-top: 1px solid #f9f9f9;
    }

    .modal-content {
        padding: 1.5rem;
        width: 95%;
        border-radius: 20px;
    }

    #bookSettingsForm {
        flex-direction: column;
        align-items: stretch !important;
    }

    #bookSettingsForm .btn-outline {
        width: 100%;
        height: auto !important;
        padding: 12px;
    }
}

.mobile-toggle {
    display: none;
}

/* Overlay for sidebar */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    backdrop-filter: blur(2px);
    z-index: 999;
}

.sidebar-overlay.active {
    display: block;
}

/* Custom File Upload */
.custom-file-upload {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2.5rem;
    background: #fff9fa;
    border: 2px dashed var(--border-color);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    gap: 12px;
}

.custom-file-upload:hover {
    border-color: var(--accent-color);
    background: #fff;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 77, 109, 0.05);
}

.custom-file-upload i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 5px;
}

.custom-file-upload span {
    font-weight: 700;
    color: var(--text-color);
    font-size: 1.1rem;
}

.custom-file-upload small {
    color: #b0b0b0;
    font-size: 0.85rem;
}

#mediaFile {
    display: none;
}

/* Link Styling */
.text-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 10px;
}

.text-link:hover {
    background: #fff0f3;
    color: var(--accent-hover);
}

.text-link i {
    font-size: 0.9rem;
}