@import url('./base.css');

/* ── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    min-height: 100vh;
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--color-border-strong);
    border-radius: var(--radius);
    corner-shape: squircle;
}

/* ── Layout ─────────────────────────────────────────────────── */
.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-7);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    flex-shrink: 0;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.app-logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-subtle);
    border-radius: var(--radius);
    corner-shape: squircle;
    color: var(--color-accent);
}

.app-logo h1 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    letter-spacing: -0.02em;
}

.app-logo span {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-weight: var(--font-weight-medium);
    margin-left: var(--space-2);
    padding: var(--space-1) var(--space-2);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius);
    corner-shape: squircle;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--space-7);
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    gap: var(--space-6);
}

/* ── Cards / Panels ─────────────────────────────────────────── */
.card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.card-header-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius);
    corner-shape: squircle;
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.card-header h2 {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    letter-spacing: -0.01em;
}

.card-header p {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.card-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* ── Two-column layout ──────────────────────────────────────── */
.columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

@media (max-width: 768px) {
    .columns {
        grid-template-columns: 1fr;
    }
    .app-main {
        padding: var(--space-4);
    }
}

/* ── Form elements ──────────────────────────────────────────── */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.form-label i {
    width: 14px;
    height: 14px;
    opacity: 0.6;
}

/* ── Custom Textarea ────────────────────────────────────────── */
.textarea {
    width: 100%;
    min-height: 120px;
    padding: var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    resize: vertical;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.textarea::placeholder {
    color: var(--color-text-disabled);
}

.textarea:hover {
    border-color: var(--color-border-strong);
}

.textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

/* ── Custom Input ───────────────────────────────────────────── */
.input {
    width: 100%;
    height: 44px;
    padding: 0 var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input::placeholder {
    color: var(--color-text-disabled);
}

.input:hover {
    border-color: var(--color-border-strong);
}

.input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

/* ── Custom Select (dropdown) ───────────────────────────────── */
.select-wrapper {
    position: relative;
    width: 100%;
}

.select-trigger {
    width: 100%;
    height: 44px;
    padding: 0 var(--space-4);
    padding-right: var(--space-8);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    cursor: pointer;
    display: flex;
    align-items: center;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    user-select: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.select-trigger:hover {
    border-color: var(--color-border-strong);
}

.select-trigger:focus,
.select-trigger.open {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.select-trigger .chevron {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-tertiary);
    transition: transform var(--transition-fast);
    pointer-events: none;
}

.select-trigger.open .chevron {
    transform: translateY(-50%) rotate(180deg);
}

.select-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    left: 0;
    right: 0;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius);
    corner-shape: squircle;
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    max-height: 280px;
    overflow-y: auto;
    padding: var(--space-2);
    display: none;
    animation: dropdown-in var(--transition-fast) forwards;
}

.select-dropdown.visible {
    display: block;
}

@keyframes dropdown-in {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.select-option {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius);
    corner-shape: squircle;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: background var(--transition-fast), color var(--transition-fast);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.select-option:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.select-option.selected {
    background: var(--color-accent-subtle);
    color: var(--color-accent-hover);
}

/* ── Custom Slider ──────────────────────────────────────────── */
.slider-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.slider-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.slider-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius);
    corner-shape: squircle;
    min-width: 40px;
    text-align: center;
}

.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius);
    corner-shape: squircle;
    outline: none;
    border: 1px solid var(--color-border);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--color-accent);
    border-radius: var(--radius);
    corner-shape: squircle;
    cursor: pointer;
    border: 2px solid var(--color-bg-primary);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 0 4px var(--color-accent-subtle);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--color-accent);
    border-radius: var(--radius);
    cursor: pointer;
    border: 2px solid var(--color-bg-primary);
}

/* ── Checkbox / Toggle ──────────────────────────────────────── */
.toggle-group {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
    user-select: none;
}

.toggle {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    transition: background var(--transition-fast), border-color var(--transition-fast);
    flex-shrink: 0;
}

.toggle::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    background: var(--color-text-secondary);
    border-radius: var(--radius);
    corner-shape: squircle;
    transition: transform var(--transition-fast), background var(--transition-fast);
}

.toggle-input {
    display: none;
}

.toggle-input:checked + .toggle {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.toggle-input:checked + .toggle::after {
    transform: translateX(20px);
    background: white;
}

.toggle-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 44px;
    padding: 0 var(--space-6);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    cursor: pointer;
    outline: none;
    transition: all var(--transition-fast);
    user-select: none;
    white-space: nowrap;
}

.btn i {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.btn-primary:active {
    background: var(--color-accent-active);
    border-color: var(--color-accent-active);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
}

.btn-secondary:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
    border-color: var(--color-border-strong);
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.btn-sm {
    height: 32px;
    padding: 0 var(--space-3);
    font-size: var(--font-size-sm);
}

.btn-sm i {
    width: 14px;
    height: 14px;
}

.btn-icon {
    width: 44px;
    padding: 0;
}

.btn-icon.btn-sm {
    width: 32px;
}

/* ── Audio Player ───────────────────────────────────────────── */
.audio-player {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
}

.audio-player-bar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.audio-player-waveform {
    flex: 1;
    height: 48px;
    background: var(--color-bg-primary);
    border-radius: var(--radius);
    corner-shape: squircle;
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

.audio-player-waveform canvas {
    width: 100%;
    height: 100%;
}

.audio-player-progress {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--color-accent-subtle);
    pointer-events: none;
    transition: width 100ms linear;
}

.audio-player-time {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-family: var(--font-mono);
    min-width: 42px;
    text-align: right;
}

.audio-player-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-6);
    color: var(--color-text-disabled);
    font-size: var(--font-size-sm);
}

/* ── Upload area ────────────────────────────────────────────── */
.upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background: var(--color-bg-tertiary);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
    position: relative;
}

.upload-area:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-subtle);
}

.upload-area.dragover {
    border-color: var(--color-accent);
    background: var(--color-accent-subtle);
}

.upload-area input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-area-icon {
    color: var(--color-text-tertiary);
}

.upload-area-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-align: center;
}

.upload-area-text strong {
    color: var(--color-accent);
}

/* ── Status bar ─────────────────────────────────────────────── */
.status-bar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    min-height: 40px;
}

.status-bar i {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.status-bar.success {
    background: var(--color-success-subtle);
    border-color: rgba(46, 213, 115, 0.2);
    color: var(--color-success);
}

.status-bar.error {
    background: var(--color-error-subtle);
    border-color: rgba(255, 71, 87, 0.2);
    color: var(--color-error);
}

.status-bar.loading {
    background: var(--color-info-subtle);
    border-color: rgba(52, 152, 219, 0.2);
    color: var(--color-info);
}

/* ── Spinner ────────────────────────────────────────────────── */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    flex-shrink: 0;
}

.spinner-sm {
    width: 14px;
    height: 14px;
}

/* ── Modal / Overlay ────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: var(--z-overlay);
    display: none;
    align-items: center;
    justify-content: center;
    animation: fade-in var(--transition-fast) forwards;
}

.modal-overlay.visible {
    display: flex;
}

@keyframes fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
    animation: modal-in var(--transition-normal) forwards;
    z-index: var(--z-modal);
}

@keyframes modal-in {
    from { opacity: 0; transform: scale(0.96) translateY(8px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
}

.modal-body {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-border);
}

/* ── Divider ────────────────────────────────────────────────── */
.divider {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-disabled);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

/* ── Badge / Tag ────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius);
    corner-shape: squircle;
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.badge-accent {
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    border-color: rgba(108, 92, 231, 0.2);
}

.badge-success {
    background: var(--color-success-subtle);
    color: var(--color-success);
    border-color: rgba(46, 213, 115, 0.2);
}

/* ── Slider grid ────────────────────────────────────────────── */
.sliders-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

@media (max-width: 768px) {
    .sliders-row {
        grid-template-columns: 1fr;
    }
}

/* ── Generate section ───────────────────────────────────────── */
.generate-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.generate-actions .btn-primary {
    flex: 1;
    height: 52px;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
}

/* ── Toast notifications ────────────────────────────────────── */
.toast-container {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    animation: toast-in var(--transition-normal) forwards;
    max-width: 380px;
}

@keyframes toast-in {
    from { opacity: 0; transform: translateY(8px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ── Code block ─────────────────────────────────────────────── */
.code-block {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    padding: var(--space-4);
    overflow-x: auto;
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

.code-inline {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    corner-shape: squircle;
    padding: var(--space-1) var(--space-2);
    color: var(--color-accent);
}

/* ── Settings modal specifics ───────────────────────────────── */
.settings-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.settings-section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-3) 0;
}

.settings-row-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.settings-row-info span:first-child {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.settings-row-info span:last-child {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

/* ── Utility ────────────────────────────────────────────────── */
.text-muted {
    color: var(--color-text-tertiary);
}

.text-accent {
    color: var(--color-accent);
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

.hidden { display: none !important; }