/* ============================================
   NUVIDEO.AI COMPONENT LIBRARY
   Reusable UI Components
   Version: 1.0
   ============================================ */

/* ============================================
   1. BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    text-decoration: none;
    text-align: center;
    white-space: nowrap;
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    user-select: none;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Primary Button - Purple Gradient */
.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border: none;
    box-shadow: var(--shadow-md), var(--shadow-purple);
    position: relative;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient-hover);
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-base);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:hover {
    box-shadow: var(--shadow-lg), var(--shadow-purple-lg);
}

/* Secondary Button - Outline */
.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border-color: transparent;
    box-shadow: var(--shadow-md), var(--shadow-purple);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--primary-color);
    border: none;
    box-shadow: none;
}

.btn-ghost:hover {
    background: var(--purple-100);
}

/* Success Button */
.btn-success {
    background: linear-gradient(135deg, var(--success-dark) 0%, var(--success) 100%);
    color: var(--text-inverse);
    border: none;
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--success) 0%, var(--success-light) 100%);
    box-shadow: var(--shadow-lg);
}

/* Danger Button */
.btn-danger {
    background: linear-gradient(135deg, var(--error-dark) 0%, var(--error) 100%);
    color: var(--text-inverse);
    border: none;
    box-shadow: var(--shadow-md);
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--error) 0%, var(--error-light) 100%);
    box-shadow: var(--shadow-lg);
}

/* Warning Button */
.btn-warning {
    background: linear-gradient(135deg, var(--warning-dark) 0%, var(--warning) 100%);
    color: var(--text-inverse);
    border: none;
    box-shadow: var(--shadow-md);
}

.btn-warning:hover {
    background: linear-gradient(135deg, var(--warning) 0%, var(--warning-light) 100%);
    box-shadow: var(--shadow-lg);
}

/* Button Sizes */
.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.btn-xl {
    padding: 20px 40px;
    font-size: 1.25rem;
}

/* Button Block */
.btn-block {
    display: flex;
    width: 100%;
}

/* Button with Icon */
.btn-icon {
    padding: 12px;
    width: 48px;
    height: 48px;
}

.btn-icon.btn-sm {
    padding: 8px;
    width: 36px;
    height: 36px;
}

/* Button Loading State */
.btn-loading {
    pointer-events: none;
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    margin: auto;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px solid var(--text-inverse);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spinner 0.6s linear infinite;
}

@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   2. CARDS
   ============================================ */

.card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), var(--shadow-purple);
    border-color: var(--primary-light);
}

.card-header {
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-light);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-light);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.card-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Card with Purple Accent */
.card-purple {
    border-top: 4px solid var(--primary-color);
}

.card-purple:hover {
    border-top-color: var(--primary-dark);
}

/* Glass Card */
.card-glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Card with Gradient Background */
.card-gradient {
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border: none;
}

.card-gradient .card-title,
.card-gradient .card-text {
    color: var(--text-inverse);
}

/* ============================================
   3. FORMS
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.1);
}

.form-control:hover {
    border-color: var(--border-default);
}

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

.form-control:disabled {
    background-color: var(--bg-tertiary);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Form Control with Purple Glow */
.form-control-purple:focus {
    border-color: var(--primary-color);
    box-shadow: var(--glow-sm);
}

/* Textarea */
.form-control-textarea {
    min-height: 120px;
    resize: vertical;
}

/* Select */
.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%236B21A8'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 40px;
}

/* Checkbox and Radio */
.form-check {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    width: 20px;
    height: 20px;
    margin-right: var(--spacing-sm);
    border: 2px solid var(--border-default);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-input:checked {
    background: var(--primary-gradient);
    border-color: var(--primary-color);
}

.form-check-label {
    cursor: pointer;
    user-select: none;
}

/* Form Validation States */
.form-control.is-valid {
    border-color: var(--success);
}

.form-control.is-invalid {
    border-color: var(--error);
}

.valid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--success);
}

.invalid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--error);
}

/* Input Groups */
.input-group {
    display: flex;
    width: 100%;
}

.input-group-prepend,
.input-group-append {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-light);
    color: var(--text-muted);
}

.input-group-prepend {
    border-right: none;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.input-group-append {
    border-left: none;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.input-group .form-control {
    border-radius: 0;
}

.input-group .form-control:first-child {
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.input-group .form-control:last-child {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

/* ============================================
   4. MODALS
   ============================================ */

.modal {
    display: none;
    position: fixed;
    z-index: var(--z-modal);
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: var(--bg-overlay);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    animation: fadeIn var(--transition-base);
}

.modal.show {
    display: block;
}

.modal-dialog {
    position: relative;
    width: auto;
    max-width: 500px;
    margin: 50px auto;
    animation: scaleIn var(--transition-base);
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.modal-header {
    padding: var(--spacing-lg);
    background: var(--primary-gradient);
    color: var(--text-inverse);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
}

.modal-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-inverse);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-footer {
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* Modal Sizes */
.modal-sm .modal-dialog {
    max-width: 300px;
}

.modal-lg .modal-dialog {
    max-width: 800px;
}

.modal-xl .modal-dialog {
    max-width: 1140px;
}

/* ============================================
   5. ALERTS
   ============================================ */

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    animation: slideInLeft var(--transition-base);
}

.alert-primary {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.1) 0%, rgba(107, 33, 168, 0.1) 100%);
    border: 1px solid var(--primary-color);
    color: var(--primary-dark);
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.1) 100%);
    border: 1px solid var(--success);
    color: var(--success-dark);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(217, 119, 6, 0.1) 100%);
    border: 1px solid var(--warning);
    color: var(--warning-dark);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(220, 38, 38, 0.1) 100%);
    border: 1px solid var(--error);
    color: var(--error-dark);
}

.alert-info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
    border: 1px solid var(--info);
    color: var(--info-dark);
}

.alert-dismissible {
    padding-right: 48px;
    position: relative;
}

.alert-dismissible .btn-close {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.alert-dismissible .btn-close:hover {
    opacity: 1;
}

/* ============================================
   6. PROGRESS BARS
   ============================================ */

.progress {
    height: 28px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 1px solid var(--border-light);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-slower) ease;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

.progress-bar-striped {
    background-image: linear-gradient(45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent);
    background-size: 40px 40px;
}

.progress-bar-animated {
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    from {
        background-position: 40px 0;
    }
    to {
        background-position: 0 0;
    }
}

.progress-sm {
    height: 8px;
}

.progress-lg {
    height: 40px;
}

/* Progress with Label */
.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.progress-label .label {
    color: var(--text-primary);
}

.progress-label .value {
    color: var(--primary-color);
}

/* ============================================
   7. TABLES
   ============================================ */

.table {
    width: 100%;
    margin-bottom: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.table thead {
    background: var(--primary-gradient);
    color: var(--text-inverse);
}

.table thead th {
    padding: var(--spacing-md);
    font-weight: 600;
    text-align: left;
    border: none;
}

.table tbody tr {
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--purple-50);
}

.table tbody td {
    padding: var(--spacing-md);
    color: var(--text-secondary);
}

.table-striped tbody tr:nth-of-type(odd) {
    background: var(--bg-tertiary);
}

.table-hover tbody tr:hover {
    background: var(--purple-100);
    cursor: pointer;
}

.table-bordered {
    border: 1px solid var(--border-light);
}

.table-bordered th,
.table-bordered td {
    border: 1px solid var(--border-light);
}

/* Table Responsive */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ============================================
   8. BADGES & TAGS
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.badge-primary {
    background: var(--primary-gradient);
    color: var(--text-inverse);
}

.badge-secondary {
    background: var(--neutral-200);
    color: var(--neutral-700);
}

.badge-success {
    background: linear-gradient(135deg, var(--success-dark) 0%, var(--success) 100%);
    color: var(--text-inverse);
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning-dark) 0%, var(--warning) 100%);
    color: var(--text-inverse);
}

.badge-danger {
    background: linear-gradient(135deg, var(--error-dark) 0%, var(--error) 100%);
    color: var(--text-inverse);
}

.badge-info {
    background: linear-gradient(135deg, var(--info-dark) 0%, var(--info) 100%);
    color: var(--text-inverse);
}

/* Badge Sizes */
.badge-sm {
    padding: 2px 8px;
    font-size: 0.625rem;
}

.badge-lg {
    padding: 6px 16px;
    font-size: 0.875rem;
}

/* Pill Badge */
.badge-pill {
    border-radius: var(--radius-full);
}

/* ============================================
   9. TOOLTIPS
   ============================================ */

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip-text {
    visibility: hidden;
    background: var(--neutral-900);
    color: var(--text-inverse);
    text-align: center;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    position: absolute;
    z-index: var(--z-tooltip);
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.tooltip-text::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--neutral-900) transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* ============================================
   10. DROPDOWNS
   ============================================ */

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: var(--z-dropdown);
    min-width: 200px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-light);
    padding: var(--spacing-sm);
    margin-top: var(--spacing-xs);
    animation: scaleIn var(--transition-fast);
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    clear: both;
    font-weight: 400;
    color: var(--text-primary);
    text-align: inherit;
    text-decoration: none;
    white-space: nowrap;
    background-color: transparent;
    border: 0;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.dropdown-item:hover {
    background: var(--purple-100);
    color: var(--primary-color);
}

.dropdown-item:active {
    background: var(--primary-gradient);
    color: var(--text-inverse);
}

.dropdown-divider {
    height: 0;
    margin: var(--spacing-sm) 0;
    overflow: hidden;
    border-top: 1px solid var(--border-light);
}

/* ============================================
   11. PAGINATION
   ============================================ */

.pagination {
    display: flex;
    padding-left: 0;
    list-style: none;
    gap: var(--spacing-xs);
}

.page-link {
    position: relative;
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    color: var(--primary-color);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.page-link:hover {
    background: var(--purple-100);
    border-color: var(--primary-color);
}

.page-item.active .page-link {
    background: var(--primary-gradient);
    border-color: transparent;
    color: var(--text-inverse);
}

.page-item.disabled .page-link {
    color: var(--text-muted);
    pointer-events: none;
    background-color: var(--bg-tertiary);
}

/* ============================================
   12. LOADING STATES
   ============================================ */

.skeleton {
    animation: skeleton-loading 1s linear infinite alternate;
}

@keyframes skeleton-loading {
    0% {
        background-color: var(--neutral-200);
    }
    100% {
        background-color: var(--neutral-300);
    }
}

.skeleton-text {
    width: 100%;
    height: 1rem;
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.skeleton-title {
    width: 50%;
    height: 1.5rem;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-sm);
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
}

.skeleton-button {
    width: 120px;
    height: 40px;
    border-radius: var(--radius-lg);
}

/* Spinner */
.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--purple-200);
    border-radius: var(--radius-full);
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 6px;
}

/* ============================================
   13. RESPONSIVE UTILITIES
   ============================================ */

/* Mobile First Responsive Classes */
@media (max-width: 767px) {
    .hide-mobile {
        display: none !important;
    }

    .modal-dialog {
        margin: var(--spacing-md);
    }

    .table {
        font-size: 0.875rem;
    }
}