/**
 * Handfish Form Element Styles
 *
 * Styled form controls that integrate with the design system tokens.
 * Covers checkboxes, radio buttons, number inputs, textareas,
 * progress bars, scrollbars, and separators.
 */

/* ============================================================================
 * Checkboxes
 * ============================================================================ */

input[type="checkbox"].hf-checkbox,
.hf-form input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border: var(--hf-border-width) solid var(--hf-border-subtle);
    border-radius: var(--hf-radius-sm);
    cursor: pointer;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    flex-shrink: 0;
    transition: border-color var(--hf-transition);
    background: transparent;
}

input[type="checkbox"].hf-checkbox::after,
.hf-form input[type="checkbox"]::after {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: var(--hf-radius-sm);
    background-color: var(--hf-bg-muted);
    transition: background-color 0.2s, transform 0.2s;
    transform: scale(0);
}

input[type="checkbox"].hf-checkbox:hover,
.hf-form input[type="checkbox"]:hover {
    border-color: var(--hf-text-normal);
}

input[type="checkbox"].hf-checkbox:checked,
.hf-form input[type="checkbox"]:checked {
    border-color: var(--hf-accent);
}

input[type="checkbox"].hf-checkbox:checked::after,
.hf-form input[type="checkbox"]:checked::after {
    background-color: var(--hf-accent);
    transform: scale(1);
}

input[type="checkbox"].hf-checkbox:focus-visible,
.hf-form input[type="checkbox"]:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: var(--hf-focus-ring-offset);
}

input[type="checkbox"].hf-checkbox:disabled,
.hf-form input[type="checkbox"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================================================
 * Radio Buttons
 * ============================================================================ */

input[type="radio"].hf-radio,
.hf-form input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: var(--hf-border-width) solid var(--hf-border-subtle);
    border-radius: var(--hf-radius-full);
    cursor: pointer;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    flex-shrink: 0;
    transition: border-color var(--hf-transition);
    background: transparent;
}

input[type="radio"].hf-radio::after,
.hf-form input[type="radio"]::after {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: var(--hf-radius-full);
    background-color: var(--hf-bg-muted);
    transition: background-color 0.2s, transform 0.2s;
    transform: scale(0);
}

input[type="radio"].hf-radio:hover,
.hf-form input[type="radio"]:hover {
    border-color: var(--hf-text-normal);
}

input[type="radio"].hf-radio:checked,
.hf-form input[type="radio"]:checked {
    border-color: var(--hf-accent);
}

input[type="radio"].hf-radio:checked::after,
.hf-form input[type="radio"]:checked::after {
    background-color: var(--hf-accent);
    transform: scale(1);
}

input[type="radio"].hf-radio:focus-visible,
.hf-form input[type="radio"]:focus-visible {
    outline: var(--hf-focus-ring-width) solid var(--hf-focus-ring-color);
    outline-offset: var(--hf-focus-ring-offset);
}

input[type="radio"].hf-radio:disabled,
.hf-form input[type="radio"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================================================
 * Number Input
 * ============================================================================ */

input[type="number"].hf-number,
.hf-form input[type="number"] {
    min-height: var(--hf-control-height);
    padding: var(--hf-control-padding);
    background: var(--hf-bg-elevated);
    border: var(--hf-border-width) solid var(--hf-border-subtle);
    border-radius: var(--hf-radius-sm);
    color: var(--hf-text-normal);
    font-family: var(--hf-font-family);
    font-size: var(--hf-size-sm);
    outline: none;
    transition: all var(--hf-transition);
    appearance: textfield;
    -moz-appearance: textfield;
}

input[type="number"].hf-number:hover,
.hf-form input[type="number"]:hover {
    background: var(--hf-bg-muted);
    border-color: var(--hf-border-hover);
}

input[type="number"].hf-number:focus,
.hf-form input[type="number"]:focus {
    border-color: var(--hf-border-focus);
    background: var(--hf-bg-muted);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--hf-accent) 25%, transparent 75%);
}

/* Hide spinners */
input[type="number"].hf-number::-webkit-outer-spin-button,
input[type="number"].hf-number::-webkit-inner-spin-button,
.hf-form input[type="number"]::-webkit-outer-spin-button,
.hf-form input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"].hf-number:disabled,
.hf-form input[type="number"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================================================
 * Text Input (extends .hf-input for explicit class usage)
 * ============================================================================ */

input[type="text"].hf-text,
input[type="email"].hf-text,
input[type="password"].hf-text,
input[type="search"].hf-text,
input[type="url"].hf-text,
.hf-form input[type="text"],
.hf-form input[type="email"],
.hf-form input[type="password"],
.hf-form input[type="search"],
.hf-form input[type="url"] {
    min-height: var(--hf-control-height);
    padding: var(--hf-control-padding);
    background: var(--hf-bg-elevated);
    border: var(--hf-border-width) solid var(--hf-border-subtle);
    border-radius: var(--hf-radius-sm);
    color: var(--hf-text-normal);
    font-family: var(--hf-font-family);
    font-size: var(--hf-size-sm);
    outline: none;
    transition: border-color var(--hf-transition);
    width: 100%;
}

input[type="text"].hf-text:hover,
input[type="email"].hf-text:hover,
input[type="password"].hf-text:hover,
input[type="search"].hf-text:hover,
input[type="url"].hf-text:hover,
.hf-form input[type="text"]:hover,
.hf-form input[type="email"]:hover,
.hf-form input[type="password"]:hover,
.hf-form input[type="search"]:hover,
.hf-form input[type="url"]:hover {
    border-color: var(--hf-border-hover);
}

input[type="text"].hf-text:focus,
input[type="email"].hf-text:focus,
input[type="password"].hf-text:focus,
input[type="search"].hf-text:focus,
input[type="url"].hf-text:focus,
.hf-form input[type="text"]:focus,
.hf-form input[type="email"]:focus,
.hf-form input[type="password"]:focus,
.hf-form input[type="search"]:focus,
.hf-form input[type="url"]:focus {
    border-color: var(--hf-border-focus);
}

input[type="text"].hf-text::placeholder,
input[type="email"].hf-text::placeholder,
input[type="password"].hf-text::placeholder,
input[type="search"].hf-text::placeholder,
input[type="url"].hf-text::placeholder,
.hf-form input[type="text"]::placeholder,
.hf-form input[type="email"]::placeholder,
.hf-form input[type="password"]::placeholder,
.hf-form input[type="search"]::placeholder,
.hf-form input[type="url"]::placeholder {
    color: var(--hf-text-dim);
}

/* ============================================================================
 * Textarea
 * ============================================================================ */

textarea.hf-textarea,
.hf-form textarea {
    width: 100%;
    padding: 0.375rem 0.5rem;
    background: var(--hf-bg-elevated);
    border: var(--hf-border-width) solid var(--hf-border-subtle);
    border-radius: var(--hf-radius-sm);
    color: var(--hf-text-normal);
    font-family: var(--hf-font-family);
    font-size: var(--hf-size-sm);
    line-height: var(--hf-leading-normal);
    outline: none;
    transition: border-color var(--hf-transition);
    resize: vertical;
    min-height: 3em;
}

textarea.hf-textarea:hover,
.hf-form textarea:hover {
    border-color: var(--hf-border-hover);
}

textarea.hf-textarea:focus,
.hf-form textarea:focus {
    border-color: var(--hf-border-focus);
}

textarea.hf-textarea::placeholder,
.hf-form textarea::placeholder {
    color: var(--hf-text-dim);
}

textarea.hf-textarea:disabled,
.hf-form textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Monospace variant for code/config */
textarea.hf-textarea-mono,
.hf-form textarea.hf-textarea-mono {
    font-family: var(--hf-font-family-mono);
    font-size: var(--hf-size-xs);
    tab-size: 4;
}

/* ============================================================================
 * Labels (within .hf-form)
 * ============================================================================ */

.hf-form label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: var(--hf-size-sm);
    color: var(--hf-text-normal);
    cursor: pointer;
}

.hf-form label:has(input:disabled) {
    cursor: not-allowed;
    opacity: 0.5;
}

/* ============================================================================
 * Radio/Checkbox Groups
 * ============================================================================ */

.hf-radio-group,
.hf-checkbox-group {
    display: flex;
    gap: 1rem;
}

.hf-radio-group-vertical,
.hf-checkbox-group-vertical {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* ============================================================================
 * Progress Bar
 * ============================================================================ */

.hf-progress {
    width: 100%;
    height: 4px;
    background: color-mix(in srgb, var(--hf-accent) 10%, transparent 90%);
    border-radius: var(--hf-radius-pill);
    overflow: hidden;
}

.hf-progress-bar {
    height: 100%;
    background: var(--hf-accent);
    border-radius: var(--hf-radius-pill);
    width: 0%;
    transition: width 0.2s ease;
}

/* Gradient variant */
.hf-progress-gradient .hf-progress-bar {
    background: linear-gradient(90deg, var(--hf-accent), var(--hf-accent-hover));
}

/* Large variant */
.hf-progress-lg {
    height: 8px;
}

/* Indeterminate */
.hf-progress-indeterminate .hf-progress-bar {
    width: 30%;
    animation: hf-progress-slide 1.5s ease-in-out infinite;
}

@keyframes hf-progress-slide {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(400%); }
}

/* ============================================================================
 * Scrollbar Theming
 * ============================================================================ */

.hf-scrollbar {
    scrollbar-width: thin;
    scrollbar-color:
        color-mix(in srgb, var(--hf-accent) 30%, transparent 70%)
        transparent;
}

.hf-scrollbar::-webkit-scrollbar {
    width: 0.5rem;
    height: 0.5rem;
}

.hf-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.hf-scrollbar::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--hf-accent) 30%, transparent 70%);
    border-radius: var(--hf-radius-pill);
}

.hf-scrollbar::-webkit-scrollbar-thumb:hover {
    background: color-mix(in srgb, var(--hf-accent) 50%, transparent 50%);
}

/* Hidden scrollbar (still scrollable) */
.hf-scrollbar-hidden {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.hf-scrollbar-hidden::-webkit-scrollbar {
    display: none;
}

/* ============================================================================
 * Separator / Divider
 * ============================================================================ */

.hf-separator {
    border: none;
    height: 1px;
    background: var(--hf-border);
    margin: var(--hf-space-2) 0;
}

.hf-separator-accent {
    background: color-mix(in srgb, var(--hf-accent) 25%, transparent 75%);
}

/* Vertical separator (for flex rows) */
.hf-separator-vertical {
    width: 1px;
    height: auto;
    align-self: stretch;
    background: var(--hf-border);
    margin: 0 var(--hf-space-2);
}

/* ============================================================================
 * File Input
 * ============================================================================ */

input[type="file"].hf-file,
.hf-form input[type="file"] {
    width: 100%;
    font-size: var(--hf-size-sm);
    color: var(--hf-text-normal);
    font-family: var(--hf-font-family);
}

input[type="file"].hf-file::file-selector-button,
.hf-form input[type="file"]::file-selector-button {
    box-sizing: border-box;
    height: var(--hf-control-height);
    padding: var(--hf-control-padding);
    font-size: var(--hf-size-xs);
    font-family: var(--hf-font-family);
    background: var(--hf-bg-elevated);
    border: var(--hf-border-width) solid var(--hf-border-subtle);
    border-radius: var(--hf-radius-sm);
    color: var(--hf-accent);
    cursor: pointer;
    margin-right: 0.5rem;
    transition: all var(--hf-transition);
}

input[type="file"].hf-file::file-selector-button:hover,
.hf-form input[type="file"]::file-selector-button:hover {
    background: var(--hf-bg-muted);
    border-color: var(--hf-border-hover);
}

/* ============================================================================
 * Inline Code & Kbd
 * ============================================================================ */

.hf-code {
    font-family: var(--hf-font-family-mono);
    font-size: 0.85em;
    padding: 0.15em 0.4em;
    background: color-mix(in srgb, var(--hf-accent) 10%, transparent 90%);
    border-radius: var(--hf-radius-sm);
    color: var(--hf-accent);
}

.hf-pre {
    font-family: var(--hf-font-family-mono);
    font-size: var(--hf-size-sm);
    padding: var(--hf-space-3);
    background: color-mix(in srgb, var(--hf-bg-base) 80%, var(--hf-bg-surface) 20%);
    border: var(--hf-border-width) solid var(--hf-border);
    border-radius: var(--hf-radius);
    color: var(--hf-text-normal);
    overflow-x: auto;
    white-space: pre;
    tab-size: 4;
}

.hf-kbd {
    font-family: var(--hf-font-family-mono);
    font-size: 0.8em;
    padding: 0.1em 0.4em;
    background: var(--hf-bg-elevated);
    border: var(--hf-border-width) solid var(--hf-border-subtle);
    border-radius: var(--hf-radius-sm);
    color: var(--hf-text-normal);
    box-shadow: 0 1px 0 var(--hf-border-subtle);
}