@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ========== RESET & BASE ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-color: #0f172a;
    --sidebar-bg: #0c1222;
    --sidebar-width: 260px;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --primary: #10b981;
    --primary-hover: #059669;
    --primary-glow: rgba(16, 185, 129, 0.3);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --input-bg: rgba(15, 23, 42, 0.6);
    --input-border: #475569;
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
}

html { height: 100%; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(16, 185, 129, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(37, 99, 235, 0.08), transparent 25%);
    background-attachment: fixed;
    color: var(--text-main);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========== APP LAYOUT (SIDEBAR + CONTENT) ========== */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ========== SIDEBAR ========== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 50;
    transition: transform 0.3s ease;
}

.sidebar.collapsed {
    transform: translateX(calc(-1 * var(--sidebar-width)));
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--card-border);
    text-align: center;
}

.sidebar-logo {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    object-fit: contain;
    margin: 0 auto 0.75rem;
    display: block;
    background: rgba(255,255,255,0.05);
    padding: 4px;
}

.sidebar-logo-placeholder {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #3b82f6);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

.sidebar-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Nav */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0.75rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.85rem;
    border-radius: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    margin-bottom: 2px;
    border: none;
    background: transparent;
    width: 100%;
    cursor: pointer;
    text-align: left;
}

.sidebar-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    text-decoration: none;
}

.sidebar-link.active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary);
    font-weight: 500;
}

.sidebar-icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-toggle {
    font-family: 'Inter', sans-serif;
}

.sidebar-arrow {
    margin-left: auto;
    transition: transform 0.2s ease;
}

.sidebar-arrow.rotated {
    transform: rotate(180deg);
}

/* Submenus */
.sidebar-submenu {
    padding-left: 1rem;
    margin-top: 2px;
}

.sidebar-sublink {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.85rem;
    border-radius: 6px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    transition: all 0.2s ease;
    margin-bottom: 1px;
}

.sidebar-sublink:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-main);
    text-decoration: none;
}

.sidebar-sublink.active {
    color: var(--primary);
}

.sidebar-divider {
    height: 1px;
    background: var(--card-border);
    margin: 1rem 0;
}

.sidebar-section-title {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #475569;
    padding: 0 0.85rem;
    margin-bottom: 0.5rem;
}

/* Footer */
.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

.sidebar-user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #3b82f6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.sidebar-user-info {
    min-width: 0;
}

.sidebar-user-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.sidebar-logout {
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error);
    padding: 0.4rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-logout:hover {
    background: var(--error);
    color: white;
    border-color: var(--error);
}

/* ========== MAIN CONTENT ========== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Topbar */
.topbar {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 40;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar-toggle {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    padding: 0.4rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: all 0.2s;
}

.topbar-toggle:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
}

.topbar-title {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Page Content */
.page-content {
    padding: 1.5rem;
    flex: 1;
}

/* ========== GLASS PANEL ========== */
.glass-panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== LOGO (Login) ========== */
.app-logo { text-align: center; }
.app-logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, #10b981, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.app-logo p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

/* ========== FORM ELEMENTS ========== */
label.block, label.form-label {
    display: block;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

input[type="email"],
input[type="password"],
input[type="text"],
input[type="number"],
input[type="file"],
input[type="color"],
select,
textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    color: var(--text-main);
    font-size: 0.9rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

input::placeholder, textarea::placeholder { color: #64748b; }

select option {
    background: var(--bg-color);
    color: var(--text-main);
}

input[type="checkbox"] {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.form-group {
    margin-bottom: 1rem;
}

/* ========== BUTTONS ========== */
button[type="submit"],
.btn-primary {
    padding: 0.65rem 1.25rem;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 4px 14px 0 var(--primary-glow);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

button[type="submit"]:hover, .btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px 0 var(--primary-glow);
    color: #fff;
    text-decoration: none;
}

.btn-secondary {
    padding: 0.65rem 1.25rem;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-secondary:hover {
    border-color: var(--text-muted);
    color: var(--text-main);
    text-decoration: none;
}

.btn-danger {
    padding: 0.45rem 0.85rem;
    background: transparent;
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
}

/* ========== LINKS ========== */
a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s;
}
a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* ========== TABLE ========== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table th {
    text-align: left;
    padding: 0.75rem 1rem;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--card-border);
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    color: var(--text-main);
}

.data-table tr:hover td {
    background: rgba(255,255,255,0.02);
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-active {
    background: rgba(16, 185, 129, 0.15);
    color: #6ee7b7;
}

.badge-inactive {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
}

.actions-cell {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* ========== CARDS ========== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 1.5rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.stat-card h3 {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin: 0;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ========== ALERTS ========== */
.alert-success-banner {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #6ee7b7;
}

.alert-error-banner {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    background: var(--error-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.text-red-600, .text-red-500 {
    color: var(--error) !important;
    font-size: 0.8rem;
}

ul { list-style: none; padding: 0; }

.text-green-600 {
    color: #6ee7b7;
    font-size: 0.875rem;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(calc(-1 * var(--sidebar-width)));
    }
    .sidebar.collapsed {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
}