/**
 * Voice PWA - Estilos
 * Tema: Oscuro, moderno y limpio
 */

/* ========================================
   CSS Variables - Paleta de colores
   ======================================== */
:root {
    /* Colores principales */
    --color-bg-primary: #0f0f1a;
    --color-bg-secondary: #1a1a2e;
    --color-bg-tertiary: #25253d;
    --color-bg-card: #16213e;

    /* Colores de acento */
    --color-accent-primary: #4361ee;
    --color-accent-secondary: #7209b7;
    --color-accent-gradient: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));

    /* Colores de texto */
    --color-text-primary: #e8e8e8;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #6c6c7c;

    /* Colores de estado */
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;

    /* Bordes y sombras */
    --border-color: #2d2d4a;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);

    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========================================
   App Container
   ======================================== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* ========================================
   Header
   ======================================== */
.app-header {
    text-align: center;
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.app-title {
    font-size: 2rem;
    font-weight: 700;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.app-title .icon {
    font-size: 2.5rem;
    -webkit-text-fill-color: initial;
}

.app-subtitle {
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
    font-size: 1rem;
}

/* ========================================
   Main Content
   ======================================== */
.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* ========================================
   Status Indicator
   ======================================== */
.status-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-text-muted);
    transition: background-color var(--transition-normal);
}

.status-indicator.listening .status-dot {
    background-color: var(--color-success);
    animation: pulse 1.5s infinite;
}

.status-indicator.error .status-dot {
    background-color: var(--color-danger);
}

.status-indicator.speaking .status-dot {
    background-color: var(--color-info);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
}

.status-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* ========================================
   Sections
   ======================================== */
.section {
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.section-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ========================================
   Transcript & Response Boxes
   ======================================== */
.transcript-container,
.response-container {
    margin-bottom: var(--spacing-md);
}

.transcript-box,
.response-box {
    min-height: 120px;
    max-height: 200px;
    overflow-y: auto;
    padding: var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    font-size: 1rem;
    line-height: 1.7;
}

.transcript-box::-webkit-scrollbar,
.response-box::-webkit-scrollbar {
    width: 6px;
}

.transcript-box::-webkit-scrollbar-track,
.response-box::-webkit-scrollbar-track {
    background: transparent;
}

.transcript-box::-webkit-scrollbar-thumb,
.response-box::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

.placeholder-text {
    color: var(--color-text-muted);
    font-style: italic;
}

/* Texto intermedio mientras se habla */
.interim-text {
    color: var(--color-text-muted);
}

.final-text {
    color: var(--color-text-primary);
}

/* ========================================
   Controls
   ======================================== */
.controls-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-width: 120px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:not(:disabled):active {
    transform: translateY(0);
}

.btn-icon {
    font-size: 1.125rem;
}

/* Button Variants */
.btn-primary {
    background: var(--color-accent-gradient);
    color: white;
}

.btn-secondary {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:not(:disabled):hover {
    background-color: var(--color-bg-card);
    border-color: var(--color-accent-primary);
}

.btn-danger {
    background-color: var(--color-danger);
    color: white;
}

.btn-danger:not(:disabled):hover {
    background-color: #dc2626;
}

/* ========================================
   Footer
   ======================================== */
.app-footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.pwa-status {
    margin-top: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.pwa-status.installed {
    color: var(--color-success);
}

/* ========================================
   Toast Notifications
   ======================================== */
.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 1000;
    pointer-events: none;
}

.toast {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    font-size: 0.875rem;
    color: var(--color-text-primary);
    animation: slideUp var(--transition-normal) ease;
    pointer-events: auto;
}

.toast.success {
    border-color: var(--color-success);
}

.toast.error {
    border-color: var(--color-danger);
}

.toast.info {
    border-color: var(--color-info);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 600px) {
    .app-container {
        padding: var(--spacing-sm);
    }

    .app-title {
        font-size: 1.5rem;
    }

    .app-title .icon {
        font-size: 2rem;
    }

    .section {
        padding: var(--spacing-md);
    }

    .controls-row {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .transcript-box,
    .response-box {
        min-height: 100px;
    }
}

/* ========================================
   Accessibility
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
.btn:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #4d4d6a;
    }
}

/* ========================================
   Header with Settings Button
   ======================================== */
.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    position: relative;
}

.btn-icon-only {
    position: absolute;
    right: 0;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
}

.btn-icon-only:hover {
    background-color: var(--color-bg-tertiary);
    transform: rotate(45deg);
}

/* ========================================
   Model Indicator
   ======================================== */
.model-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--border-radius-lg);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.model-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-text-muted);
}

.model-indicator.active .model-dot {
    background-color: var(--color-success);
}

.model-indicator.simulated .model-dot {
    background-color: var(--color-warning);
}

/* ========================================
   Modal Styles
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    padding: var(--spacing-md);
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: translateY(20px) scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.open .modal {
    transform: translateY(0) scale(1);
}

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

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color var(--transition-fast);
}

.btn-close:hover {
    color: var(--color-danger);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* ========================================
   Settings Form Elements
   ======================================== */
.setting-group {
    margin-bottom: var(--spacing-lg);
}

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

.setting-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.label-hint {
    font-weight: 400;
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.setting-select,
.setting-input,
.setting-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--color-text-primary);
    font-size: 0.9375rem;
    transition: border-color var(--transition-fast);
}

.setting-select:focus,
.setting-input:focus,
.setting-textarea:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.setting-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23a0a0b0' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.setting-textarea {
    min-height: 80px;
    resize: vertical;
    font-family: inherit;
}

.setting-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

/* Input with action button */
.input-with-action {
    display: flex;
    gap: var(--spacing-sm);
}

.input-with-action .setting-input {
    flex: 1;
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--color-text-primary);
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.btn-small:hover {
    background-color: var(--color-bg-card);
    border-color: var(--color-accent-primary);
}

/* Provider settings sections */
.provider-settings {
    padding: var(--spacing-md);
    background-color: var(--color-bg-primary);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

/* ========================================
   Loading State
   ======================================== */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-text-muted);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   Responsive Modal
   ======================================== */
@media (max-width: 600px) {
    .modal {
        max-height: 100vh;
        border-radius: 0;
    }

    .modal-overlay {
        padding: 0;
    }

    .modal-footer {
        flex-direction: column;
    }

    .modal-footer .btn {
        width: 100%;
    }

    .header-content {
        padding-right: 40px;
    }
}