/* ==========================================================================
   forms.css - Inputs, selects, toggles, form sections.
   Same soft look as the rest of the design system (tokens in base.css).
   Form buttons (.btn-submit ...) live in components.css.
   ========================================================================== */

/* =========================================
   FORM BASICS
   ========================================= */

.form-group {
    margin-bottom: 1.25rem;
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 0.5rem;
}

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

.form-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--ds-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--ds-border-strong);
    border-radius: var(--ds-radius-input);
    background-color: var(--ds-surface);
    color: var(--ds-text);
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--ds-text);
    box-shadow: 0 0 0 3px var(--ds-brand);
}

.form-input[readonly] {
    background-color: var(--ds-surface-alt);
}

/* A field turns red once the user has interacted with it (never while still untouched) */
.form-input:user-invalid {
    border-color: var(--ds-danger-solid);
}

.form-select:user-invalid {
    border-color: var(--ds-danger-solid);
}

.form-textarea:user-invalid {
    border-color: var(--ds-danger-solid);
}

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

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* One-time code / PIN field */
.form-input.input-code {
    font-family: monospace;
    font-size: 1.5rem;
    letter-spacing: 0.4em;
    text-align: center;
}

/* Custom Select Styles */
.form-select {
    appearance: none;
    padding-right: 2.5rem;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
    cursor: pointer;
}

/* =========================================
   TOGGLE SWITCH
   ========================================= */

.toggle-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background-color: var(--ds-surface);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius);
    transition: border-color 0.15s ease;
}

.toggle-container:hover {
    border-color: var(--ds-border-strong);
}

.toggle-label {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-right: 1.5rem;
}

.toggle-title {
    font-weight: 600;
    font-size: 0.9rem;
}

.toggle-description {
    font-size: 0.75rem;
    color: var(--ds-muted);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
    flex-shrink: 0;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--ds-surface-alt);
    border: 1px solid var(--ds-border-strong);
    border-radius: var(--ds-radius-pill);
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: var(--ds-muted);
    border-radius: 50%;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

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

input:checked + .slider:before {
    background-color: var(--ds-text);
    transform: translateX(22px);
}

.toggle-danger input:checked + .slider {
    background-color: var(--ds-danger-solid);
    border-color: var(--ds-danger-strong);
}

.toggle-danger input:checked + .slider:before {
    background-color: #fff;
}

input:focus-visible + .slider {
    outline: 3px solid var(--ds-focus);
    outline-offset: 2px;
}

/* =========================================
   FORM LAYOUT - ROWS & GRIDS
   ========================================= */

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.form-row-2:last-child {
    margin-bottom: 0;
}

.form-row-2 .form-group {
    margin-bottom: 0;
}

.form-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.form-row-3 .form-group {
    margin-bottom: 0;
}

/* =========================================
   FORM SECTIONS (Cards)
   ========================================= */

.form-section {
    background-color: var(--ds-surface);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-lg);
    box-shadow: var(--ds-shadow-card);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.form-section-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background-color: var(--ds-surface-alt);
    border-bottom: 1px solid var(--ds-border);
}

.form-section-icon {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.form-section-title {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.0625rem;
}

.form-section-body {
    padding: 1.5rem;
}

/* Legacy support (section without header) */
.form-section:not(:has(.form-section-header)) {
    padding: 1.5rem;
}

.form-section:not(:has(.form-section-header)) .form-section-title {
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px dashed var(--ds-border);
}

/* =========================================
   FORM HELPER TEXT & HINTS
   ========================================= */

.form-hint {
    font-size: 0.75rem;
    color: var(--ds-muted);
    margin-top: 0.25rem;
}

.form-divider {
    height: 0;
    margin: 1.5rem 0;
    border-top: 1px dashed var(--ds-border-strong);
}

/* =========================================
   FORM ACTIONS
   ========================================= */

.form-actions {
    margin-top: 1.5rem;
}

/* =========================================
   CONDITIONAL FIELDS (Collapsible)
   ========================================= */

.conditional-field {
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--ds-surface-alt);
    border: 1px dashed var(--ds-border-strong);
    border-radius: var(--ds-radius);
    display: none;
}

.conditional-field.visible {
    display: block;
}

/* =========================================
   DESKTOP FORM ADAPTATIONS
   ========================================= */

@media (min-width: 1024px) {

    .wrapper-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 2rem;
    }

    .page-header {
        margin-bottom: 0;
    }

    /* Grid layout for form sections */
    .desktop-form-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
        align-items: start;
    }

    .desktop-form-grid.announcement-layout {
        grid-template-columns: 3fr 2fr;
    }

    .desktop-form-grid.event-layout {
        grid-template-columns: 1fr 1fr;
    }

    .desktop-form-grid .form-section {
        margin-bottom: 0;
    }

    /* Span full width */
    .desktop-form-grid .form-section-wide {
        grid-column: 1 / -1;
    }

    /* Actions section */
    .desktop-form-grid .form-actions {
        grid-column: 1 / -1;
        margin-top: 0.5rem;
        display: flex;
        justify-content: flex-end;
    }

    .desktop-form-grid .btn-submit {
        width: auto;
        min-width: 250px;
        padding: 1rem 2rem;
    }
}

/* =========================================
   MOBILE FORM ADAPTATIONS
   ========================================= */

@media (max-width: 640px) {
    .form-row-2,
    .form-row-3 {
        grid-template-columns: 1fr;
    }

    .form-section-body {
        padding: 1rem;
    }

    .form-section-header {
        padding: 0.875rem 1rem;
    }
}

/* =========================================
   VALIDATION ERRORS
   ========================================= */

.form-error-text {
    color: var(--ds-danger-text);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: block;
}

.validation-error-summary {
    background-color: var(--ds-danger-soft);
    border: 1px solid var(--ds-danger-border);
    border-radius: var(--ds-radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.validation-error-summary strong {
    display: block;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--ds-danger-text);
}

.validation-error-summary ul {
    margin: 0;
    padding-left: 1.25rem;
}

.validation-error-summary li {
    margin-bottom: 0.25rem;
}

.validation-error-summary a {
    color: var(--ds-danger-text);
    text-decoration: underline;
}

.validation-error-summary a:hover {
    text-decoration-thickness: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .form-input,
    .form-select,
    .form-textarea,
    .slider,
    .slider:before {
        transition: none;
    }
}