/* ============================================================
   SD-INPUT / SD-SELECT / SD-TEXTAREA — Form Input Components
   BEM: sd-input, sd-select, sd-textarea
   Depends on: tokens.css (design tokens)
   ============================================================ */

/* ============================================================
   LABEL
   ============================================================ */
.sd-form-label {
    display: block;
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary, #666666);
    margin-bottom: 0.375rem;
    line-height: 1.4;
}

.sd-form-label--required::after {
    content: ' *';
    color: var(--danger, #d13438);
    font-weight: 400;
}

/* ============================================================
   INPUT
   ============================================================ */
.sd-input {
    display: block;
    width: 100%;
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border, #e1e1e1);
    border-radius: var(--radius-sm, 6px);
    background: var(--bg-base, #ffffff);
    color: var(--text-primary, #1a1a1a);
    transition:
        border-color var(--duration, 0.2s) var(--ease, cubic-bezier(0.4, 0, 0.2, 1)),
        box-shadow var(--duration, 0.2s) var(--ease, cubic-bezier(0.4, 0, 0.2, 1)),
        background var(--duration, 0.2s) var(--ease, cubic-bezier(0.4, 0, 0.2, 1));
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    appearance: none;
}

.sd-input::placeholder {
    color: var(--text-muted, #999999);
}

/* --- Focus State --- */
.sd-input:focus {
    outline: none;
    border-color: var(--accent, #2563eb);
    box-shadow: 0 0 0 3px var(--accent-subtle, rgba(37, 99, 235, 0.12));
}

/* --- Focus Visible (Accessibility) --- */
.sd-input:focus-visible {
    outline: none;
    border-color: var(--accent, #2563eb);
    box-shadow: 0 0 0 3px var(--accent-subtle, rgba(37, 99, 235, 0.12));
}

/* --- Disabled State --- */
.sd-input:disabled,
.sd-input[aria-disabled="true"] {
    background: var(--bg-surface-hover, #f5f5f5);
    color: var(--text-muted, #999999);
    cursor: not-allowed;
    border-color: var(--border-subtle, #f0f0f0);
}

/* --- Error State --- */
.sd-input--error {
    border-color: var(--danger, #d13438);
}

.sd-input--error:focus {
    border-color: var(--danger, #d13438);
    box-shadow: 0 0 0 3px var(--danger-subtle, rgba(209, 52, 56, 0.12));
}

/* --- Success State --- */
.sd-input--success {
    border-color: var(--success, #107c10);
}

.sd-input--success:focus {
    border-color: var(--success, #107c10);
    box-shadow: 0 0 0 3px var(--success-subtle, rgba(16, 124, 16, 0.12));
}

/* --- Small Size --- */
.sd-input--sm {
    font-size: 0.8125rem;
    padding: 0.375rem 0.625rem;
}

/* --- Large Size --- */
.sd-input--lg {
    font-size: 1rem;
    padding: 0.625rem 1rem;
}

/* ============================================================
   SELECT
   ============================================================ */
.sd-select {
    display: block;
    width: 100%;
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
    padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    border: 1px solid var(--border, #e1e1e1);
    border-radius: var(--radius-sm, 6px);
    background-color: var(--bg-base, #ffffff);
    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='%23666666' 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 0.625rem center;
    background-size: 1rem;
    color: var(--text-primary, #1a1a1a);
    cursor: pointer;
    appearance: none;
    transition:
        border-color var(--duration, 0.2s) var(--ease, cubic-bezier(0.4, 0, 0.2, 1)),
        box-shadow var(--duration, 0.2s) var(--ease, cubic-bezier(0.4, 0, 0.2, 1));
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.sd-select:focus {
    outline: none;
    border-color: var(--accent, #2563eb);
    box-shadow: 0 0 0 3px var(--accent-subtle, rgba(37, 99, 235, 0.12));
}

.sd-select:disabled,
.sd-select[aria-disabled="true"] {
    background-color: var(--bg-surface-hover, #f5f5f5);
    color: var(--text-muted, #999999);
    cursor: not-allowed;
    border-color: var(--border-subtle, #f0f0f0);
}

.sd-select--error {
    border-color: var(--danger, #d13438);
}

.sd-select--error:focus {
    border-color: var(--danger, #d13438);
    box-shadow: 0 0 0 3px var(--danger-subtle, rgba(209, 52, 56, 0.12));
}

.sd-select--sm {
    font-size: 0.8125rem;
    padding: 0.375rem 2rem 0.375rem 0.625rem;
}

.sd-select--lg {
    font-size: 1rem;
    padding: 0.625rem 2.5rem 0.625rem 1rem;
}

/* ============================================================
   TEXTAREA
   ============================================================ */
.sd-textarea {
    display: block;
    width: 100%;
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.6;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--border, #e1e1e1);
    border-radius: var(--radius-sm, 6px);
    background: var(--bg-base, #ffffff);
    color: var(--text-primary, #1a1a1a);
    resize: vertical;
    min-height: 5rem;
    transition:
        border-color var(--duration, 0.2s) var(--ease, cubic-bezier(0.4, 0, 0.2, 1)),
        box-shadow var(--duration, 0.2s) var(--ease, cubic-bezier(0.4, 0, 0.2, 1));
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.sd-textarea::placeholder {
    color: var(--text-muted, #999999);
}

.sd-textarea:focus {
    outline: none;
    border-color: var(--accent, #2563eb);
    box-shadow: 0 0 0 3px var(--accent-subtle, rgba(37, 99, 235, 0.12));
}

.sd-textarea:disabled,
.sd-textarea[aria-disabled="true"] {
    background: var(--bg-surface-hover, #f5f5f5);
    color: var(--text-muted, #999999);
    cursor: not-allowed;
    border-color: var(--border-subtle, #f0f0f0);
}

.sd-textarea--error {
    border-color: var(--danger, #d13438);
}

.sd-textarea--error:focus {
    border-color: var(--danger, #d13438);
    box-shadow: 0 0 0 3px var(--danger-subtle, rgba(209, 52, 56, 0.12));
}

.sd-textarea--sm {
    font-size: 0.8125rem;
    padding: 0.5rem 0.625rem;
    min-height: 4rem;
}

.sd-textarea--lg {
    font-size: 1rem;
    padding: 0.75rem 1rem;
    min-height: 7rem;
}

/* ============================================================
   HELP TEXT & ERROR MESSAGES
   ============================================================ */
.sd-form-help {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted, #999999);
    margin-top: 0.375rem;
    line-height: 1.4;
}

.sd-form-error {
    display: block;
    font-size: 0.75rem;
    color: var(--danger, #d13438);
    margin-top: 0.375rem;
    line-height: 1.4;
}

/* ============================================================
   FORM GROUP (layout wrapper)
   ============================================================ */
.sd-form-group {
    margin-bottom: 1.25rem;
}

/* ============================================================
   DARK MODE
   ============================================================ */
[data-theme="dark"] .sd-input,
[data-theme="dark"] .sd-select,
[data-theme="dark"] .sd-textarea {
    background: var(--bg-base, #121212);
    border-color: var(--border, #333333);
    color: var(--text-primary, #e0e0e0);
}

[data-theme="dark"] .sd-input::placeholder,
[data-theme="dark"] .sd-textarea::placeholder {
    color: var(--text-muted, #666666);
}

[data-theme="dark"] .sd-input:disabled,
[data-theme="dark"] .sd-select:disabled,
[data-theme="dark"] .sd-textarea:disabled {
    background: var(--bg-surface-hover, #1a1a1a);
    border-color: var(--border-subtle, #222222);
}

[data-theme="dark"] .sd-select {
    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='%23a0a0a0' 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");
}

[data-theme="dark"] .sd-form-label {
    color: var(--text-secondary, #a0a0a0);
}

[data-theme="dark"] .sd-form-help {
    color: var(--text-muted, #666666);
}