/**
 * INTERCEPT UI Components
 * Reusable component styles for buttons, cards, badges, etc.
 * Requires: variables.css and base.css
 */

/* ============================================
   BUTTONS
   ============================================ */

/* Base button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

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

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Button variants */
.btn-primary {
    background: var(--accent-cyan);
    color: var(--text-inverse);
    border-color: var(--accent-cyan);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-cyan-hover);
    border-color: var(--accent-cyan-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

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

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.btn-danger {
    background: var(--accent-red);
    color: var(--text-inverse);
    border-color: var(--accent-red);
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
    border-color: #dc2626;
}

.btn-success {
    background: var(--accent-green);
    color: var(--text-inverse);
    border-color: var(--accent-green);
}

.btn-success:hover:not(:disabled) {
    background: #16a34a;
    border-color: #16a34a;
}

/* Button sizes */
.btn-sm {
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
}

.btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
}

/* Icon button */
.btn-icon {
    padding: var(--space-2);
    width: 36px;
    height: 36px;
}

.btn-icon.btn-sm {
    width: 28px;
    height: 28px;
    padding: var(--space-1);
}

/* ============================================
   CARDS / PANELS
   ============================================ */
.card {
    background: var(--surface-panel-gradient);
    border: 1px solid rgba(74, 163, 255, 0.24);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(5px);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid rgba(74, 163, 255, 0.18);
    background: linear-gradient(180deg, rgba(25, 38, 55, 0.88) 0%, rgba(17, 27, 40, 0.9) 100%);
    position: relative;
}

.card-header-title {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.card-body {
    padding: var(--space-4);
}

.card-footer {
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

/* Panel variant (used in dashboards) */
.panel {
    background: var(--surface-panel-gradient);
    border: 1px solid rgba(74, 163, 255, 0.24);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(5px);
}

@supports (clip-path: polygon(0 0)) {
    .card,
    .panel {
        --notch-size: 6px;
        border-radius: 0;
        clip-path: polygon(
            var(--notch-size) 0,
            calc(100% - var(--notch-size)) 0,
            100% var(--notch-size),
            100% calc(100% - var(--notch-size)),
            calc(100% - var(--notch-size)) 100%,
            var(--notch-size) 100%,
            0 calc(100% - var(--notch-size)),
            0 var(--notch-size)
        );
    }
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
    border-bottom: 1px solid rgba(74, 163, 255, 0.18);
    background: linear-gradient(180deg, rgba(25, 38, 55, 0.88) 0%, rgba(17, 27, 40, 0.9) 100%);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    position: relative;
}

.card-header::before,
.panel-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: var(--space-3);
    width: 36px;
    height: 2px;
    background: var(--accent-cyan);
    opacity: 0.7;
}

.panel-indicator {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--status-offline);
}

.panel-indicator.active {
    background: var(--status-online);
    box-shadow: 0 0 8px var(--status-online);
}

.panel-content {
    padding: var(--space-3);
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 2px var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.badge-primary {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
}

.badge-success {
    background: var(--accent-green-dim);
    color: var(--accent-green);
}

.badge-warning {
    background: var(--accent-orange-dim);
    color: var(--accent-orange);
}

.badge-danger {
    background: var(--accent-red-dim);
    color: var(--accent-red);
}

/* ============================================
   DATA TAGS
   ============================================ */
.data-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 2px var(--space-2);
    font-size: 10px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    box-shadow: inset 0 0 0 1px var(--border-glow);
}

.data-tag--accent {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
}

.data-tag--warning {
    border-color: var(--accent-amber);
    color: var(--accent-amber);
    background: var(--accent-amber-dim);
}

.data-tag--success {
    border-color: var(--accent-green);
    color: var(--accent-green);
    background: var(--accent-green-dim);
}

.data-tag--danger {
    border-color: var(--accent-red);
    color: var(--accent-red);
    background: var(--accent-red-dim);
}

/* ============================================
   STATUS INDICATORS
   ============================================ */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--status-offline);
    flex-shrink: 0;
}

.status-dot.online,
.status-dot.active {
    background: var(--status-online);
    box-shadow: 0 0 4px var(--status-online);
}

.status-dot.warning {
    background: var(--status-warning);
    box-shadow: 0 0 4px var(--status-warning);
}

.status-dot.error,
.status-dot.offline {
    background: var(--status-error);
}

.status-dot.inactive {
    background: var(--status-offline);
}

/* Pulse animation for active status */
.status-dot.pulse {
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-4);
    text-align: center;
    color: var(--text-muted);
}

.empty-state-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.empty-state-description {
    font-size: var(--text-sm);
    color: var(--text-dim);
    max-width: 300px;
}

.empty-state-action {
    margin-top: var(--space-4);
}

/* ============================================
   LOADING STATES
   ============================================ */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-cyan);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 14px;
    height: 14px;
    border-width: 2px;
}

.spinner-lg {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

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

/* Loading overlay */
.loading-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-overlay);
    z-index: var(--z-modal);
}

/* Skeleton loader */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-elevated) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================
   STATS STRIP
   ============================================ */
.stats-strip {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 var(--space-4);
    height: var(--stats-strip-height);
    overflow-x: auto;
    gap: var(--space-1);
}

.strip-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 var(--space-3);
    min-width: fit-content;
}

.strip-value {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--accent-cyan);
    line-height: 1;
}

.strip-label {
    font-size: 9px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    line-height: 1;
    margin-top: 2px;
}

.strip-divider {
    width: 1px;
    height: 20px;
    background: var(--border-color);
    margin: 0 var(--space-2);
}

/* ============================================
   FORM GROUPS
   ============================================ */
.form-group {
    margin-bottom: var(--space-4);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-1);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
}

.form-help {
    margin-top: var(--space-1);
    font-size: var(--text-xs);
    color: var(--text-dim);
}

.form-error {
    margin-top: var(--space-1);
    font-size: var(--text-xs);
    color: var(--accent-red);
}

/* Inline checkbox/radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
}

.form-check input {
    width: auto;
}

.form-check label {
    margin-bottom: 0;
    cursor: pointer;
}

/* ============================================
   ALERTS / TOASTS
   ============================================ */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid;
    font-size: var(--text-sm);
}

.alert-info {
    background: var(--accent-cyan-dim);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.alert-success {
    background: var(--accent-green-dim);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.alert-warning {
    background: var(--accent-orange-dim);
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

.alert-danger {
    background: var(--accent-red-dim);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

/* ============================================
   TOOLTIPS
   ============================================ */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-1) var(--space-2);
    background: var(--bg-elevated);
    color: var(--text-primary);
    font-size: var(--text-xs);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    z-index: var(--z-tooltip);
    pointer-events: none;
    margin-bottom: var(--space-1);
    box-shadow: var(--shadow-md);
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   ICONS
   ============================================ */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.icon svg {
    width: 100%;
    height: 100%;
}

.icon--sm {
    width: 16px;
    height: 16px;
}

.icon--lg {
    width: 24px;
    height: 24px;
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--border-color);
}

.section-title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    position: relative;
    padding-left: var(--space-3);
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 2px;
    height: 6px;
    background: var(--accent-cyan);
    transform: translateY(-50%);
    opacity: 0.7;
    box-shadow: 0 6px 0 var(--accent-cyan);
}

/* ============================================
   DIVIDERS
   ============================================ */
.divider {
    height: 1px;
    background-image: repeating-linear-gradient(
        90deg,
        var(--border-light),
        var(--border-light) 6px,
        transparent 6px,
        transparent 12px
    );
    margin: var(--space-4) 0;
}

.divider-vertical {
    width: 1px;
    height: 100%;
    background-image: repeating-linear-gradient(
        180deg,
        var(--border-light),
        var(--border-light) 6px,
        transparent 6px,
        transparent 12px
    );
    margin: 0 var(--space-3);
}

/* ============================================
   UX POLISH - ENHANCED INTERACTIONS
   ============================================ */

/* Button hover lift */
.btn:hover:not(:disabled) {
    box-shadow: 0 0 0 1px var(--border-light);
}

.btn:active:not(:disabled) {
    box-shadow: inset 0 0 0 1px var(--border-light);
}

/* Card/Panel hover effects */
.card,
.panel {
    transition:
        box-shadow var(--transition-base),
        border-color var(--transition-base),
        transform var(--transition-base);
}

.card:hover,
.panel:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-md), var(--shadow-glow), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    transform: translateY(-1px);
}

[data-theme="light"] .card,
[data-theme="light"] .panel {
    border-color: rgba(31, 95, 168, 0.24);
}

[data-theme="light"] .card-header,
[data-theme="light"] .panel-header {
    border-bottom-color: rgba(31, 95, 168, 0.2);
    background: linear-gradient(180deg, rgba(243, 247, 252, 0.96) 0%, rgba(233, 239, 247, 0.95) 100%);
}

/* Stats strip value highlight on hover */
.strip-stat {
    transition: background-color var(--transition-fast);
    border-radius: var(--radius-sm);
    cursor: default;
}

.strip-stat:hover {
    background: var(--bg-tertiary);
}

/* Status dot pulse animation */
.status-dot.online,
.status-dot.active {
    animation: statusGlow 2s ease-in-out infinite;
}

@keyframes statusGlow {
    0%, 100% {
        box-shadow: 0 0 4px var(--status-online);
    }
    50% {
        box-shadow: 0 0 8px var(--status-online), 0 0 12px var(--status-online);
    }
}

/* Badge hover effect */
.badge {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.badge:hover {
    transform: scale(1.02);
}

/* Alert entrance animation */
.alert {
    animation: alertSlideIn 0.3s ease-out;
}

@keyframes alertSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading spinner smooth appearance */
.spinner {
    animation: spin 0.8s linear infinite, fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Input focus glow */
input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 2px var(--accent-cyan-dim);
}

/* Nav item active indicator */
.nav-item,
.mode-nav-btn,
.mobile-nav-btn {
    position: relative;
}

.nav-item.active::after,
.mode-nav-btn.active::after,
.mobile-nav-btn.active::after {
    content: '';
    position: absolute;
    left: 12%;
    right: 12%;
    bottom: 2px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    opacity: 0.75;
    animation: railPulse 2.6s ease-in-out infinite;
}

@keyframes railPulse {
    0%, 100% { opacity: 0.45; }
    50% { opacity: 0.9; }
}

/* Smooth tooltip appearance */
[data-tooltip]::after {
    transition:
        opacity var(--transition-fast),
        visibility var(--transition-fast),
        transform var(--transition-fast);
    transform: translateX(-50%) translateY(-4px);
}

[data-tooltip]:hover::after {
    transform: translateX(-50%) translateY(0);
}

/* Disabled state with better visual feedback */
:disabled,
.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(30%);
}