/**
 * HTML Playground Styles
 *
 * Uses only design tokens from main.css (no hard-coded colors).
 * Prefix: hp-
 * Layout: wide two-column editor + preview workspace, toolbar, console.
 */

/* ==========================================================================
   App Container (wide, PM-approved)
   ========================================================================== */

.hp-container {
    max-width: var(--container-max);
    padding: var(--space-4);
    margin: 0 auto;
}

/* Visually hidden (accessibility) */
.hp-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   Toolbar
   ========================================================================== */

.hp {
    display: block;
    outline: none;
}

.hp:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
    border-radius: var(--radius-lg);
}

.hp-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: center;
    padding: var(--space-3);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-4);
}

/* Segmented mode toggle (radio group) */
.hp-segmented {
    display: inline-flex;
    padding: 0;
    margin: 0;
    border: 0;
    border-radius: var(--radius-md);
    background: var(--color-bg-alt);
    overflow: hidden;
    gap: 0;
}

.hp-segment {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.hp-segment + .hp-segment {
    border-inline-start: 1px solid var(--color-border);
}

.hp-segment:hover {
    background: var(--color-bg-card);
}

.hp-segment input {
    position: absolute;
    opacity: 0;
    width: 1px;
    height: 1px;
}

.hp-segment input:checked + span {
    color: var(--color-text-inverse);
}

.hp-segment:has(input:checked) {
    background: var(--color-primary);
}

.hp-segment:has(input:checked):hover {
    background: var(--color-primary-dark);
}

.hp-segment input:focus-visible + span {
    box-shadow: var(--focus-ring);
    border-radius: var(--radius-sm);
}

/* Device-width chips */
.hp-chips {
    display: inline-flex;
    gap: var(--space-2);
}

.hp-chip {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.hp-chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.hp-chip[aria-pressed="true"] {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.hp-chip:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* Buttons */
.hp-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 44px;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.hp-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.hp-btn:active {
    transform: translateY(1px);
}

.hp-btn svg {
    flex-shrink: 0;
}

.hp-btn-primary {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-primary);
}

.hp-btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.hp-btn-secondary {
    background: var(--color-bg-alt);
    color: var(--color-text);
    border-color: var(--color-border);
}

.hp-btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.hp-btn-danger:hover {
    border-color: var(--color-error);
    color: var(--color-error-text);
}

/* Stats */
.hp-stats {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-inline-start: auto;
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.hp-stats-sep {
    opacity: 0.6;
}

.hp-stats-item {
    white-space: nowrap;
}

.hp-stats-item span {
    color: var(--color-text);
}

/* ==========================================================================
   Workspace (two columns on >=1024px, stacked below)
   ========================================================================== */

.hp-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

@media (min-width: 1024px) {
    .hp-workspace {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    }
}

.hp-inputs {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.hp-inputs-sep {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.hp-inputs-sep[hidden],
.hp-inputs-single[hidden] {
    display: none !important;
}

.hp-pane {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.hp-pane-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.hp-pane-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.hp-pane-count {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.hp-textarea {
    display: block;
    width: 100%;
    min-height: 140px;
    padding: var(--space-3);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg-alt);
    border: 0;
    resize: vertical;
    transition: box-shadow var(--transition-fast);
}

.hp-textarea::placeholder {
    color: var(--color-text-muted);
    opacity: 0.85;
}

.hp-textarea:focus {
    outline: none;
    box-shadow: inset var(--focus-ring);
}

.hp-textarea-single {
    min-height: 320px;
}

/* ==========================================================================
   Preview
   ========================================================================== */

.hp-preview-col {
    display: flex;
    flex-direction: column;
}

.hp-preview {
    position: relative;
    width: 100%;
    margin: 0 auto;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: width var(--transition-base);
}

/* Device widths (centered, only width changes) */
.hp-preview[data-device="desktop"] {
    width: 100%;
}

.hp-preview[data-device="tablet"] {
    width: 768px;
    max-width: 100%;
}

.hp-preview[data-device="mobile"] {
    width: 375px;
    max-width: 100%;
}

.hp-preview-framebar {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.hp-framebar-dots {
    display: inline-flex;
    gap: 4px;
}

.hp-framebar-dots i {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--color-border);
    display: block;
}

.hp-framebar-title {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.hp-iframe {
    display: block;
    width: 100%;
    height: 460px;
    min-height: var(--app-output-min-height);
    border: 0;
    background: #ffffff;
}

.hp-preview-empty {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    margin: 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    pointer-events: none;
    background: var(--color-bg-card);
}

.hp-preview-empty[hidden] {
    display: none;
}

/* ==========================================================================
   Console
   ========================================================================== */

.hp-console {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.hp-console-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.hp-console-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex: 1;
    padding: var(--space-3);
    min-height: 44px;
    background: var(--color-bg-alt);
    border: 0;
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.hp-console-toggle:hover {
    background: var(--color-bg-card);
}

.hp-console-toggle:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.hp-chevron {
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.hp-console-toggle[aria-expanded="false"] .hp-chevron {
    transform: rotate(-90deg);
}

.hp-console-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.5rem;
    height: 1.5rem;
    padding: 0 var(--space-2);
    border-radius: var(--radius-full);
    background: var(--color-bg);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.hp-console-badge.has-errors {
    background: var(--color-error);
    color: var(--color-text-inverse);
}

.hp-console-clear {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    margin-inline-start: auto;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.hp-console-clear:hover {
    border-color: var(--color-error);
    color: var(--color-error-text);
}

.hp-console-clear:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.hp-console-body {
    max-height: clamp(120px, 24vh, 260px);
    min-height: 48px;
    overflow-y: auto;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
}

.hp-console-body[hidden] {
    display: none;
}

.hp-console-empty {
    margin: var(--space-2) 0;
    color: var(--color-text-muted);
}

.hp-console-empty[hidden] {
    display: none;
}

.hp-console-line {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-1) 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    word-break: break-word;
}

.hp-console-line:last-child {
    border-bottom: 0;
}

.hp-console-line.is-error {
    border-left: 2px solid var(--color-error);
    padding-inline-start: var(--space-2);
}

.hp-console-line.is-warn {
    border-left: 2px solid var(--color-warning);
    padding-inline-start: var(--space-2);
}

.hp-console-level {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    flex-shrink: 0;
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: 0 var(--space-2);
    border-radius: var(--radius-sm);
    background: var(--color-bg-alt);
    line-height: 1.4;
}

.hp-console-level svg {
    width: 14px;
    height: 14px;
}

.hp-console-level.is-log {
    color: var(--color-text);
}

.hp-console-level.is-warn {
    color: var(--color-warning-text);
}

.hp-console-level.is-error {
    color: var(--color-error-text);
}

.hp-console-text {
    flex: 1;
    white-space: pre-wrap;
}

/* ========================================
   Help button (header + help modal close).
   `.btn-icon` is not in main.css; the portal pattern lives per-app
   (see camera-recorder.css / calculator.css) and is required here for
   the header help toggle and the .help-close button.
   ======================================== */

.btn-icon {
    width: calc(var(--space-10) + var(--space-1));
    height: calc(var(--space-10) + var(--space-1));
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition:
        background var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast);
}

.btn-icon:hover {
    background: var(--color-border);
    border-color: var(--color-border-dark);
    color: var(--color-text);
}

.btn-icon:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.btn-icon:active {
    transform: scale(0.98);
}

@media (prefers-reduced-motion: reduce) {
    .hp-preview {
        transition: none;
    }

    .hp-chevron {
        transition: none;
    }

    .hp-btn:active {
        transform: none;
    }
}