:root {
    --bg-dark: #0B0C0E;
    --card-bg: #141519;
    --card-border: #22242A;
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --accent-amber: #EAB308;
    --accent-hover: #CA8A04;
    --active-item: #1E2028;
    --radius-lg: 12px;
    --radius-md: 8px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: 260px;
    background-color: var(--bg-dark);
    border-right: 1px solid var(--card-border);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: sticky;
    top: 0;
    height: 100vh;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
}

.logo-icon {
    font-size: 24px;
    background: #1F2128;
    padding: 8px;
    border-radius: var(--radius-md);
}

.logo-text h2 {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo-text span {
    font-size: 10px;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.nav-title {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 0.8px;
    margin-bottom: 12px;
    display: block;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    transition: all 0.2s ease;
}

.nav-item:hover, .nav-item.active {
    background-color: var(--active-item);
    color: var(--text-primary);
}

.sidebar-storage-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 16px;
    border-radius: var(--radius-lg);
}

.storage-card-header {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: #272A34;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--accent-amber);
    border-radius: 10px;
}

.storage-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Main Layout */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.topbar {
    height: 70px;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
}

.breadcrumb-container {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: 500;
}

.search-form {
    position: relative;
    width: 360px;
}

.search-form input {
    width: 100%;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 8px 16px 8px 36px;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}

.search-form input:focus {
    border-color: var(--accent-amber);
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
}

.btn-primary {
    background-color: var(--accent-amber);
    color: #000;
    padding: 8px 18px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: background 0.2s ease;
    border: none;
    cursor: pointer;
}

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

.content-area {
    padding: 32px;
    flex: 1;
}

/* Dynamic Grid & Tables */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.stat-title {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.data-table th {
    text-align: left;
    padding: 14px 20px;
    font-size: 12px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--card-border);
    text-transform: uppercase;
}

.data-table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--card-border);
    font-size: 14px;
}

.data-table tr:hover {
    background: var(--active-item);
}

.file-link {
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Mobile Responsive Styling */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--card-border);
        padding: 16px;
    }

    .sidebar-header {
        margin-bottom: 16px;
    }

    .nav-section {
        display: flex;
        overflow-x: auto;
        gap: 8px;
        margin-bottom: 16px;
        padding-bottom: 8px;
    }

    .nav-title {
        display: none;
    }

    .nav-item {
        white-space: nowrap;
        margin-bottom: 0;
    }

    .topbar {
        flex-direction: column;
        align-items: stretch;
        height: auto;
        padding: 16px;
        gap: 12px;
    }

    .search-form {
        width: 100%;
    }

    .topbar-actions {
        width: 100%;
    }

    .topbar-actions .btn-primary {
        display: block;
        text-align: center;
        width: 100%;
    }

    .content-area {
        padding: 16px;
        overflow-x: auto;
    }

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

    /* Table horizontal scroll for mobile screens */
    .data-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .data-table th, .data-table td {
        padding: 10px 12px;
        font-size: 13px;
    }
}
/* Lightbox Modal */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 85%;
    max-height: 80vh;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 28px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    font-size: 18px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
}

.lightbox-close:hover {
    background: var(--active-item);
}