/* ============================================
   UploadMedia — Components
   Buttons, Cards, Inputs, Modals, Toasts, etc.
   ============================================ */

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    white-space: nowrap;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-md), 0 0 20px rgba(99, 102, 241, 0.2);
}

.btn-primary:hover {
    box-shadow: var(--shadow-lg), 0 0 30px rgba(99, 102, 241, 0.3);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border: var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(71, 85, 105, 0.6);
}

.btn-ghost {
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background: rgba(148, 163, 184, 0.1);
    color: var(--color-text-primary);
}

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

.btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
    border-radius: var(--radius-md);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

.btn:disabled,
.btn.loading {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.btn .spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ── Cards ── */
.card {
    background: var(--color-bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-accent);
    box-shadow: var(--shadow-glow);
}

.card-gradient {
    position: relative;
}

.card-gradient::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--color-accent-start), transparent 50%, var(--color-accent-end));
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.card-gradient:hover::before {
    opacity: 0.3;
}

.card-compact {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
}

/* Stat cards */
.stat-card {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--gradient-accent);
    color: white;
    flex-shrink: 0;
}

.stat-card .stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: 1;
}

.stat-card .stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

/* ── Inputs ── */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-input:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), var(--shadow-glow);
}

.form-input:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-error);
}

.form-input-icon {
    position: relative;
}

.form-input-icon .form-input {
    padding-left: 44px;
}

.form-input-icon i {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
}

/* ── Badge ── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-accent {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-text-accent);
}

.badge-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.badge-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.badge-error {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.badge-secondary {
    background: rgba(148, 163, 184, 0.15);
    color: var(--color-text-secondary);
}

/* ── Table ── */
.table-responsive {
    overflow-x: auto;
}

.table-container {
    overflow-x: auto;
    border-radius: var(--radius-xl);
    border: var(--glass-border);
    background: var(--color-bg-card);
    backdrop-filter: var(--glass-blur);
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th {
    padding: var(--space-4);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.table td {
    padding: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    border-bottom: 1px solid rgba(148, 163, 184, 0.06);
    vertical-align: middle;
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: rgba(148, 163, 184, 0.05);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* ── Modal ── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-bg-overlay);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal-overlay);
    padding: var(--space-4);
    animation: fadeIn var(--transition-fast) ease;
}

.modal {
    background: var(--color-bg-secondary);
    border: var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    max-width: 480px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    z-index: var(--z-modal);
    animation: scaleIn var(--transition-spring) forwards;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(148, 163, 184, 0.1);
    color: var(--color-text-primary);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

/* ── Toast ── */
.toast-container {
    position: fixed;
    top: calc(var(--navbar-height) + var(--space-4));
    right: var(--space-4);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg-secondary);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 300px;
    max-width: 420px;
    pointer-events: auto;
    animation: slideInRight var(--transition-spring) forwards;
}

.toast-success {
    border-left: 3px solid var(--color-success);
}

.toast-error {
    border-left: 3px solid var(--color-error);
}

.toast-warning {
    border-left: 3px solid var(--color-warning);
}

.toast-info {
    border-left: 3px solid var(--color-info);
}

.toast-message {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
}

.toast-close {
    color: var(--color-text-muted);
    cursor: pointer;
    flex-shrink: 0;
}

.toast-close:hover {
    color: var(--color-text-primary);
}

/* ── Upload Zone ── */
.upload-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-12) var(--space-8);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background: transparent;
    position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--color-accent);
    background: rgba(99, 102, 241, 0.05);
    box-shadow: var(--shadow-glow);
}

.upload-zone.dragover {
    border-style: solid;
    transform: scale(1.01);
}

.upload-zone-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    color: var(--color-text-muted);
    transition: color var(--transition-base);
}

.upload-zone:hover .upload-zone-icon,
.upload-zone.dragover .upload-zone-icon {
    color: var(--color-accent);
}

.upload-zone-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.upload-zone-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ── Progress Bar ── */
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
    position: relative;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shimmer 1.5s infinite;
    background-size: 200% 100%;
}

/* ── Empty State ── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-16) var(--space-8);
    text-align: center;
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-2);
}

.empty-state-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    max-width: 400px;
}

/* ── Avatar ── */
.avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: white;
    text-transform: uppercase;
    flex-shrink: 0;
}

.avatar-sm {
    width: 28px;
    height: 28px;
    font-size: var(--font-size-xs);
}

.avatar-lg {
    width: 48px;
    height: 48px;
    font-size: var(--font-size-lg);
}

/* ── Skeleton Loading ── */
.skeleton {
    background: linear-gradient(90deg, var(--color-bg-tertiary) 25%, rgba(71, 85, 105, 0.5) 50%, var(--color-bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: 14px;
    margin-bottom: var(--space-2);
}

.skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: var(--space-3);
}

.skeleton-card {
    height: 120px;
    border-radius: var(--radius-xl);
}

/* ── Dropdown ── */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-2);
    min-width: 180px;
    background: var(--color-bg-secondary);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    padding: var(--space-2);
    animation: fadeInDown var(--transition-fast) ease;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    width: 100%;
    text-align: left;
}

.dropdown-item:hover {
    background: rgba(148, 163, 184, 0.1);
    color: var(--color-text-primary);
}

.dropdown-item-danger {
    color: var(--color-error);
}

.dropdown-item-danger:hover {
    background: var(--color-error-bg);
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-2) 0;
}

/* ── Switch ── */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg-tertiary);
    transition: .3s;
    border-radius: 34px;
    border: 1px solid var(--color-border);
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background-color: var(--color-text-muted);
    transition: .3s;
    border-radius: 50%;
}

input:checked+.slider {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

input:focus+.slider {
    box-shadow: 0 0 1px var(--color-accent);
}

input:checked+.slider:before {
    transform: translateX(20px);
    background-color: white;
}