/**
 * Chess Hub Component Library
 * Reusable UI components with consistent styling
 */

/* ============================================================================
   CARDS
   ============================================================================ */

.card {
    background: var(--color-card);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    width: 100%;
    overflow-wrap: anywhere;
}

.card.card-sm {
    padding: var(--spacing-md);
}

.card.card-lg {
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.card.card-form {
    max-width: 500px;
}

.card-header {
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
}

.card-header h2 {
    margin: 0;
}

.card-body {
    padding: 0;
}

.card-footer {
    border-top: 1px solid var(--color-border-light);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
}

.card form {
    display: flex;
    flex-direction: column;
}

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

button,
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    display: inline-block;
    text-align: center;
    font-family: inherit;
}

/* Button States */
button:disabled,
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

button:active,
.btn:active {
    transform: scale(0.98);
}

/* Primary Button */
.btn-primary,
button[type="submit"]:not(.btn-danger) {
    background: var(--color-primary-gradient);
    color: white;
}

.btn-primary:hover,
button[type="submit"]:not(.btn-danger):hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.btn-primary:focus,
button[type="submit"]:not(.btn-danger):focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Secondary Button */
.btn-secondary,
button.btn-secondary[type="submit"] {
    background: var(--color-bg-light);
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
}

.btn-secondary:hover,
button.btn-secondary[type="submit"]:hover {
    background: var(--color-border-light);
}

.btn-secondary:focus,
button.btn-secondary[type="submit"]:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Danger Button */
.btn-danger,
button[type="submit"].btn-danger {
    background: var(--color-danger) !important;
    color: white !important;
}

.btn-danger:hover,
button[type="submit"].btn-danger:hover {
    background: var(--color-danger-hover) !important;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(220, 53, 69, 0.4);
}

.btn-danger:focus,
button[type="submit"].btn-danger:focus {
    outline: 2px solid var(--color-danger);
    outline-offset: 2px;
}

/* Size Variants */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
}

/* Icon buttons */
.btn svg {
    width: 16px;
    height: 16px;
    vertical-align: middle;
}

.btn-sm svg {
    width: 14px;
    height: 14px;
}

.btn-favorite-active svg {
    color: #f59e0b;
    fill: #f59e0b;
}

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

/* Button Groups */
.btn-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ============================================================================
   FORMS
   ============================================================================ */

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

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="search"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="search"]:focus,
input[type="url"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input.error,
textarea.error,
select.error {
    border-color: var(--color-danger);
}

input.error:focus,
textarea.error:focus,
select.error:focus {
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

.form-error {
    color: var(--color-danger);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    display: block;
}

.form-help {
    color: var(--color-text-light);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    display: block;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

/* Country Region Styling - Generic styling for country-specific form sections */
.country-region {
    background: var(--color-bg-light);
    border: 2px solid var(--color-border-light);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.country-region-header {
    border-bottom: 1px solid var(--color-border-light);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.country-region-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.country-region-body {
    padding: 0;
}

/* ============================================================================
   TABLES
   ============================================================================ */

table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

table.table {
    background: var(--color-card);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

table th {
    background: var(--color-bg-light);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    border-bottom: 2px solid var(--color-border-light);
}

table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

table.table-striped tbody tr:nth-child(odd) {
    background: var(--color-bg);
}

table.table-striped tbody tr:nth-child(even) {
    background: var(--color-card);
}

table.table-hover tbody tr:hover {
    background: var(--color-bg-light);
    transition: background var(--transition-fast);
}

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

/* Table Responsive */
@media (max-width: 768px) {
    table {
        font-size: var(--font-size-xs);
    }

    table th,
    table td {
        padding: var(--spacing-xs);
    }
}

/* ============================================================================
   RATING DISPLAY COMPONENTS
   ============================================================================ */

.ratings-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.rating-item {
    text-align: center;
    padding: 25px 20px;
    background: var(--color-card);
    border-radius: var(--border-radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    border: 1px solid var(--color-border-light);
}

.rating-item--alert {
    border-color: #e53e3e;
}

.rating-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.rating-item-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-lighter);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.rating-item-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.rating-item-value .rating-cell {
    display: contents;
}

.rating-item-value .rating-value {
    /* inherits font from parent */
}

.rating-item-value .rating-delta {
    position: static;
    transform: none;
    font-size: 0.55em;
    margin-left: 0;
}

.rating-item-value .rating-delta--up {
    align-self: flex-start;
}

.rating-item-value .rating-delta--down {
    align-self: flex-end;
}

.rating-metadata {
    /* font-size: var(--font-size-xs); */
}

/* ============================================================================
   PROFILE COMPONENTS
   ============================================================================ */

.profile-section {
    background: transparent;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
    width: 100%;
}

.profile-item {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.profile-item:last-child {
    border-bottom: none;
}

/* Compact Profile Header */
.profile-header-compact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-bg-secondary);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
}

.profile-header-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.profile-header-label {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    color: var(--color-text-lighter);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.05em;
}

.profile-header-value {
    font-size: var(--font-size-md);
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
}

/* Chess Platform IDs Grid */
.chess-ids-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.chess-id-card {
    position: relative;
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    background: var(--color-card);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border-light);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.chess-id-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
    text-decoration: none;
    color: inherit;
}

.chess-id-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-lighter);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.chess-id-value {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    word-break: break-word;
}

.profile-label {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    color: var(--color-text-lighter);
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
}

.profile-value {
    font-size: var(--font-size-base);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.profile-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    display: inline-block;
    margin-top: var(--spacing-xs);
    transition: text-decoration var(--transition-fast);
}

.profile-link:hover {
    text-decoration: underline;
}

/* ============================================================================
   EMPTY STATES & MESSAGES
   ============================================================================ */

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-lighter);
    font-style: italic;
    font-size: var(--font-size-sm);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.empty-state-text {
    font-size: var(--font-size-base);
}

.empty-section {
    color: var(--color-text-lighter);
    font-style: italic;
    font-size: var(--font-size-sm);
}

/* ============================================================================
   BADGES & LABELS
   ============================================================================ */

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
}

.badge-primary {
    background: var(--color-primary);
    color: white;
}

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

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

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

.badge-secondary {
    background: var(--color-bg-light);
    color: var(--color-text);
}

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

.text-center {
    text-align: center;
}

.form-note {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

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

.text-success {
    color: var(--color-success);
}

.text-error {
    color: var(--color-error);
}

.text-warning {
    color: var(--color-warning);
}

.text-light {
    color: var(--color-text-light);
}

.text-lighter {
    color: var(--color-text-lighter);
}

.text-xs {
    font-size: var(--font-size-xs);
}

.rating-cell {
    display: inline-block;
    position: relative;
}

.rating-delta {
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75em;
    margin-left: 4px;
    font-weight: 500;
    white-space: nowrap;
}

.rating-delta--up {
    color: #28a745;
}

.rating-delta--down {
    color: #dc3545;
}

.text-sm {
    font-size: var(--font-size-sm);
}

.text-lg {
    font-size: var(--font-size-lg);
}

.chart-container {
    position: relative;
    width: 100%;
    height: 400px;
}

.external-link {
    color: #007bff;
    text-decoration: none;
}

.external-link:hover {
    text-decoration: underline;
}

.m-0 { margin: 0; }
.ml-md { margin-left: var(--spacing-md); }
.pb-md { padding-bottom: var(--spacing-md); }
.pt-md { padding-top: var(--spacing-md); }

.form-inline {
    display: inline;
}

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

.sortable-header {
    color: inherit;
    text-decoration: none;
    cursor: pointer;
}

.sortable-header:hover {
    color: var(--color-primary);
}

.player-link {
    color: inherit;
    text-decoration: none;
    cursor: pointer;
}

.player-link:hover {
    color: var(--color-primary);
}

/* Highlight current users' rows in yellow */
.ranking-current-user {
    background-color: #fff9c4 !important;
    font-weight: bold;
}
.ranking-current-user:hover {
    background-color: #fff59d !important;
    font-weight: bold;
}

/* Highlight friends' rows in blue */
.ranking-friend {
    background-color: #e3f2fd !important;
    font-weight: bold;
}
.ranking-friend:hover {
    background-color: #bbdefb !important;
    font-weight: bold;
}

/* Current user highlighting takes precedence over friend highlighting */
.ranking-current-user.ranking-friend {
    background-color: #fff9c4 !important;
    font-weight: bold;
}
.ranking-current-user.ranking-friend:hover {
    background-color: #fff59d !important;
    font-weight: bold;
}


.mt-xs { margin-top: var(--spacing-xs); }
.ml-xs { margin-left: var(--spacing-xs); }
.mb-md { margin-bottom: var(--spacing-md); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* ============================================================================
   RESPONSIVE ADJUSTMENTS FOR COMPONENTS
   ============================================================================ */

@media (min-width: 769px) and (max-width: 1024px) {
    .card {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .card {
        padding: var(--spacing-md) var(--spacing-sm);
        border-radius: var(--border-radius-md);
    }

    .ratings-container {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }

    .rating-item {
        padding: 12px 8px;
    }

    .rating-item-value {
        font-size: var(--font-size-lg);
    }

    .profile-header-compact {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: var(--spacing-sm);
    }

    .chess-ids-container {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .chess-id-card {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .chess-id-value {
        font-size: var(--font-size-md);
    }

    .btn {
        padding: var(--spacing-xs);
        font-size: var(--font-size-sm);
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   Tab Navigation
   ============================================================================ */

#tabs {
    scroll-margin-top: 1.5rem;
}

.tab-nav {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-md);
    gap: 0;
}

.tab-nav a {
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted, #666);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.15s, border-color 0.15s;
}

.tab-nav a:hover {
    color: var(--color-primary);
}

.tab-nav a.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}