/**
 * Forum Form Styles
 * New topic form, edit forms, filters, and input components
 */

/* ============================================
   NEW TOPIC PAGE LAYOUT
   ============================================ */

.forum-new-topic {
    padding: clamp(1.5rem, 3vw, 2rem) 0 clamp(3rem, 6vw, 5rem);
    background: var(--bg-primary);
    min-height: calc(100vh - 64px);
}

/* Page Header - Matching site-wide pattern with accent underline */
.forum-new-topic .page-header {
    display: flex;
    flex-direction: column;
    gap: clamp(0.5rem, 1vw, 0.75rem);
    padding-bottom: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: clamp(1.5rem, 3vw, 2rem);
    border-bottom: 2px solid var(--accent);
}

.forum-new-topic .page-title {
    font-size: clamp(1.625rem, 3vw + 0.25rem, 2.25rem);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

.forum-new-topic .page-subtitle,
.forum-new-topic .page-description {
    font-size: clamp(0.9375rem, 1.5vw + 0.25rem, 1.0625rem);
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

/* ============================================
   TOPIC FORM CONTAINER
   ============================================ */

.topic-form {
    max-width: 800px;
    padding: clamp(1.25rem, 2.5vw, 2rem);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

html.dark .topic-form {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

/* ============================================
   FORM GROUPS
   ============================================ */

.form-group {
    margin-bottom: clamp(1.25rem, 2.5vw, 1.5rem);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    margin-bottom: clamp(0.375rem, 0.75vw, 0.5rem);
    font-size: clamp(0.875rem, 1.25vw + 0.15rem, 0.9375rem);
    font-weight: 600;
    color: var(--text-primary);
}

.form-label .required {
    color: var(--error);
    margin-left: 0.25rem;
}

.form-hint {
    display: block;
    margin-top: clamp(0.25rem, 0.5vw, 0.375rem);
    font-size: clamp(0.8125rem, 1.25vw + 0.1rem, 0.875rem);
    color: var(--text-muted);
}

.form-hint--error {
    color: var(--error);
}

/* ============================================
   INPUT FIELDS
   ============================================ */

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: clamp(0.625rem, 1.25vw, 0.75rem) clamp(0.875rem, 1.5vw, 1rem);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: clamp(0.9375rem, 1.25vw + 0.2rem, 1rem);
    font-family: inherit;
    transition: all 0.2s ease;
    min-height: 44px;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--border-light);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

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

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Textarea specific */
.form-textarea {
    min-height: clamp(150px, 20vw, 200px);
    resize: vertical;
    line-height: 1.6;
}

/* Select specific */
.form-select {
    appearance: none;
    cursor: pointer;
    padding-right: clamp(2.5rem, 3.5vw, 3rem);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right clamp(0.75rem, 1.25vw, 1rem) center;
}

/* ============================================
   FORM VALIDATION STATES
   ============================================ */

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

.form-input--error:focus,
.form-textarea.form-input--error:focus,
.form-input.is-invalid:focus,
.form-select.is-invalid:focus,
.form-textarea.is-invalid:focus {
    box-shadow: 0 0 0 3px var(--error-bg);
}

.validation-error,
.form-error {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-top: clamp(0.25rem, 0.5vw, 0.375rem);
    font-size: clamp(0.8125rem, 1.25vw + 0.1rem, 0.875rem);
    color: var(--error);
    font-weight: 500;
}

.validation-error svg,
.form-error svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.validation-success {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--success);
    font-weight: 500;
}

.validation-success svg {
    color: var(--success);
}

/* ============================================
   FORM ACTIONS (Submit/Cancel Buttons)
   Consistent heights and alignment
   ============================================ */

.form-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: clamp(0.625rem, 1.25vw, 0.75rem);
    margin-top: clamp(1.5rem, 3vw, 2rem);
    padding-top: clamp(1rem, 2vw, 1.25rem);
    border-top: 1px solid var(--border);
}

/* All buttons in form-actions get same height */
.form-actions .btn,
.form-actions button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 44px;
    padding: 0 clamp(1rem, 2vw, 1.5rem);
    font-size: clamp(0.875rem, 1.25vw + 0.15rem, 0.9375rem);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    white-space: nowrap;
}

.form-actions .btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* Primary submit button */
.form-actions .btn-primary,
.form-actions .btn--primary {
    background: var(--accent);
    color: #000;
    border: none;
}

.form-actions .btn-primary:hover,
.form-actions .btn--primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.3);
}

.form-actions .btn-primary:active,
.form-actions .btn--primary:active {
    transform: translateY(0);
}

.form-actions .btn-primary:disabled,
.form-actions .btn--primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Secondary/Cancel button */
.form-actions .btn-secondary,
.form-actions .btn--secondary,
.form-actions .btn-cancel {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.form-actions .btn-secondary:hover,
.form-actions .btn--secondary:hover,
.form-actions .btn-cancel:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-light);
}

/* ============================================
   FORM MESSAGES (Success/Error)
   ============================================ */

.form-message {
    display: flex;
    align-items: center;
    gap: clamp(0.625rem, 1.25vw, 0.75rem);
    padding: clamp(0.875rem, 1.5vw, 1rem);
    border-radius: var(--radius-md);
    margin-bottom: clamp(1.25rem, 2.5vw, 1.5rem);
    font-size: clamp(0.875rem, 1.25vw + 0.15rem, 0.9375rem);
}

.form-message svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.form-message--error {
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid var(--error);
}

.form-message--success {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success);
}

/* ============================================
   FORM GUIDELINES BOX
   ============================================ */

.form-guidelines {
    padding: clamp(1rem, 2vw, 1.25rem);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: clamp(1.25rem, 2.5vw, 1.5rem);
}

.guidelines-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 0 clamp(0.5rem, 1vw, 0.75rem) 0;
    font-size: clamp(0.9375rem, 1.5vw + 0.15rem, 1rem);
    font-weight: 600;
    color: var(--text-primary);
}

.guidelines-title svg {
    color: var(--accent);
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.guidelines-list {
    margin: 0 0 clamp(0.5rem, 1vw, 0.75rem) 0;
    padding-left: 1.25rem;
    font-size: clamp(0.8125rem, 1.25vw + 0.15rem, 0.875rem);
    color: var(--text-secondary);
    line-height: 1.7;
}

.guidelines-list li {
    margin-bottom: 0.375rem;
}

.guidelines-list li:last-child {
    margin-bottom: 0;
}

.guidelines-warning {
    margin: 0 0 clamp(0.5rem, 1vw, 0.75rem) 0;
    padding: clamp(0.375rem, 0.75vw, 0.5rem) clamp(0.625rem, 1vw, 0.75rem);
    background: rgba(var(--error-rgb), 0.1);
    border-left: 3px solid var(--error);
    color: var(--text-secondary);
    font-size: clamp(0.75rem, 1.1vw + 0.1rem, 0.8125rem);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.guidelines-links {
    padding-top: clamp(0.5rem, 1vw, 0.75rem);
    border-top: 1px solid var(--border);
    font-size: clamp(0.75rem, 1.1vw + 0.1rem, 0.8125rem);
}

.guidelines-link {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

.guidelines-link:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.guidelines-separator {
    margin: 0 0.5rem;
    color: var(--text-muted);
}

/* ============================================
   FILTER CONTROLS
   ============================================ */

.forum-filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: clamp(0.75rem, 1.5vw, 1rem);
    padding: clamp(0.75rem, 1.5vw, 1rem);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: clamp(1.25rem, 2.5vw, 1.5rem);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: clamp(0.375rem, 0.75vw, 0.5rem);
}

.filter-label {
    font-size: clamp(0.8125rem, 1.25vw + 0.1rem, 0.875rem);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.filter-select {
    padding: clamp(0.375rem, 0.75vw, 0.5rem) clamp(1.75rem, 2.5vw, 2rem) clamp(0.375rem, 0.75vw, 0.5rem) clamp(0.625rem, 1vw, 0.75rem);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: clamp(0.8125rem, 1.25vw + 0.1rem, 0.875rem);
    font-weight: 500;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    transition: all 0.15s ease;
    min-height: 40px;
}

.filter-select:hover {
    border-color: var(--border-light);
    background-color: var(--bg-hover);
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* Filter actions (new topic button in filter bar) */
.forum-filters .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 40px;
    padding: 0 clamp(0.875rem, 1.5vw, 1rem);
    font-size: clamp(0.8125rem, 1.25vw + 0.1rem, 0.875rem);
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.forum-filters .btn svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   FORUM CATEGORY PAGE
   ============================================ */

.forum-category {
    padding: clamp(1.5rem, 3vw, 2rem) 0 clamp(3rem, 6vw, 5rem);
    background: var(--bg-primary);
    min-height: calc(100vh - 64px);
}

/* ============================================
   FORUM STATS
   ============================================ */

.forum-stats {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(1.5rem, 3vw, 2rem);
    padding: clamp(1.25rem, 2.5vw, 1.5rem);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-top: clamp(1.5rem, 3vw, 2rem);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
}

.stat-value {
    font-size: clamp(1.25rem, 2.5vw + 0.25rem, 1.5rem);
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: clamp(0.8125rem, 1.25vw + 0.1rem, 0.875rem);
    color: var(--text-secondary);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.forum-toast {
    position: fixed;
    bottom: clamp(1rem, 3vw, 2rem);
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: clamp(0.625rem, 1.25vw, 0.75rem);
    padding: clamp(0.875rem, 1.5vw, 1rem) clamp(1.25rem, 2vw, 1.5rem);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: clamp(0.875rem, 1.25vw + 0.15rem, 0.9375rem);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    pointer-events: auto;
}

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

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

.toast svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

/* ============================================
   BUTTON VARIANTS
   ============================================ */

.btn-danger {
    background: var(--error);
    color: var(--bg-primary);
    border: none;
}

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

.btn-danger:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Loading states */
.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-loading .spinner,
.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ============================================
   MODAL FORM ELEMENTS
   ============================================ */

.forum-modal__body .form-group {
    margin-bottom: clamp(0.75rem, 1.5vw, 1rem);
}

.forum-modal__body .form-group:last-child {
    margin-bottom: 0;
}

.forum-modal__body .form-label {
    margin-bottom: 0.375rem;
    font-size: clamp(0.8125rem, 1.25vw + 0.1rem, 0.875rem);
}

.forum-modal__body .form-select,
.forum-modal__body .form-textarea {
    font-size: clamp(0.875rem, 1.25vw + 0.15rem, 0.9375rem);
}

.forum-modal__body .form-textarea {
    min-height: 80px;
    resize: vertical;
}

/* ============================================
   REPLY EDIT FORM
   ============================================ */

.reply-edit-form {
    margin-top: clamp(0.75rem, 1.5vw, 1rem);
}

.reply-edit-form .form-group {
    margin-bottom: clamp(0.75rem, 1.5vw, 1rem);
}

.reply-edit-form .form-textarea {
    width: 100%;
    padding: clamp(0.625rem, 1.25vw, 0.75rem);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: clamp(0.875rem, 1.25vw + 0.15rem, 0.9375rem);
    line-height: 1.6;
    font-family: inherit;
    resize: vertical;
    transition: all 0.2s ease;
}

.reply-edit-form .form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.reply-edit-form .form-textarea:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.reply-edit-actions {
    display: flex;
    gap: clamp(0.625rem, 1.25vw, 0.75rem);
    justify-content: flex-end;
    align-items: center;
}

.reply-edit-actions .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 40px;
    padding: 0 clamp(0.875rem, 1.5vw, 1.25rem);
    font-size: clamp(0.875rem, 1.25vw + 0.15rem, 0.9375rem);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.reply-edit-actions .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.reply-edit-actions .btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

.reply-edit-actions .btn-primary {
    background: var(--accent);
    color: #000;
}

.reply-edit-actions .btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 640px) {
    .form-actions {
        flex-direction: column-reverse;
    }

    .form-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .forum-filters {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group {
        justify-content: space-between;
        width: 100%;
    }

    .filter-select {
        flex: 1;
        max-width: none;
    }

    .reply-edit-actions {
        flex-direction: column-reverse;
    }

    .reply-edit-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .forum-toast {
        left: 1rem;
        right: 1rem;
        transform: none;
    }

    .toast {
        width: 100%;
        justify-content: center;
    }

    .forum-stats {
        justify-content: space-around;
    }
}