/**
 * Brasil Acessível - Tema Dark
 * Baseado no theme.dart do Flutter
 */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&family=Roboto:wght@400;500;700&display=swap');

:root {
    --color-primary: #673AB7;
    --color-primary-dark: #512DA8;
    --color-primary-light: #9575CD;
    --color-accent: #7C4DFF;
    --color-background: #121212;
    --color-surface: #1E1E1E;
    --color-surface-variant: #2D2D2D;
    --color-error: #CF6679;
    --color-on-primary: #FFFFFF;
    --color-on-background: #FFFFFF;
    --color-on-surface: #FFFFFF;
    --color-on-surface-variant: rgba(255, 255, 255, 0.7);
    --color-disabled: rgba(255, 255, 255, 0.38);
    
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Roboto', sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

html, body {
    height: 100%;
    font-family: var(--font-body);
    background-color: var(--color-background);
    color: var(--color-on-background);
    line-height: 1.5;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0;
}

.display-large { font-size: 57px; letter-spacing: -0.25px; }
.display-medium { font-size: 45px; }
.display-small { font-size: 36px; }
.headline-large { font-size: 32px; }
.headline-medium { font-size: 28px; }
.headline-small { font-size: 24px; }
.title-large { font-size: 22px; }
.title-medium { font-size: 16px; font-weight: 500; letter-spacing: 0.15px; }
.title-small { font-size: 14px; font-weight: 500; letter-spacing: 0.1px; }
.body-large { font-size: 16px; letter-spacing: 0.5px; }
.body-medium { font-size: 14px; letter-spacing: 0.25px; }
.body-small { font-size: 12px; letter-spacing: 0.4px; }
.label-large { font-size: 14px; font-weight: 500; letter-spacing: 1.25px; }
.label-medium { font-size: 12px; font-weight: 500; letter-spacing: 0.5px; }
.label-small { font-size: 11px; font-weight: 500; letter-spacing: 0.5px; }

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

.page {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

/* App Bar */
.app-bar {
    background-color: transparent;
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.app-bar h1 {
    font-size: 20px;
    font-weight: 600;
}

.app-bar .back-btn {
    position: absolute;
    left: 16px;
    background: none;
    border: none;
    color: var(--color-on-background);
    font-size: 16px;
    cursor: pointer;
    padding: 8px;
}

/* Cards */
.card {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    padding: 16px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Buttons */
.btn {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-on-primary);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
    background-color: rgba(124, 77, 255, 0.1);
}

.btn-text {
    background: none;
    border: none;
    color: var(--color-accent);
    padding: 8px 16px;
}

.btn-text:hover {
    text-decoration: underline;
}

.btn-block {
    width: 100%;
}

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

/* Inputs */
.input-group {
    margin-bottom: 16px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--color-on-surface-variant);
    font-size: 14px;
}

.input {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    font-family: var(--font-body);
    background-color: var(--color-surface-variant);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--color-on-surface);
    transition: border-color 0.2s;
}

.input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.input::placeholder {
    color: rgba(255, 255, 255, 0.54);
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--color-surface-variant);
    background-color: var(--color-surface);
}

.tab {
    flex: 1;
    padding: 16px;
    text-align: center;
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--color-on-surface-variant);
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
    border-bottom: 2px solid transparent;
}

.tab.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.tab-content {
    display: none;
    padding: 16px;
    flex: 1;
    overflow-y: auto;
}

.tab-content.active {
    display: block;
}

/* Lists */
.list {
    list-style: none;
}

.list-item {
    padding: 16px;
    border-bottom: 1px solid var(--color-surface-variant);
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.list-item:hover {
    background-color: var(--color-surface);
}

.list-item-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-surface-variant);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.list-item-content {
    flex: 1;
    min-width: 0;
}

.list-item-title {
    font-size: 16px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.list-item-subtitle {
    font-size: 14px;
    color: var(--color-on-surface-variant);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Drawer */
.drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100%;
    background-color: var(--color-surface);
    transform: translateX(-100%);
    transition: transform 0.3s;
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.drawer.open {
    transform: translateX(0);
}

.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 999;
}

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

.drawer-header {
    background-color: var(--color-primary);
    padding: 24px 16px;
    color: var(--color-on-primary);
}

.drawer-header h2 {
    font-size: 24px;
}

.drawer-menu {
    flex: 1;
    overflow-y: auto;
}

.drawer-menu-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    color: var(--color-on-surface);
    cursor: pointer;
    transition: background-color 0.2s;
}

.drawer-menu-item:hover {
    background-color: var(--color-surface-variant);
}

.drawer-menu-item svg,
.drawer-menu-item .icon {
    width: 24px;
    height: 24px;
}

/* Loader */
.loader {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-surface-variant);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Error */
.error-message {
    padding: 16px;
    background-color: rgba(207, 102, 121, 0.1);
    border: 1px solid var(--color-error);
    border-radius: var(--radius-sm);
    color: var(--color-error);
    margin: 16px;
}

.error-message button {
    margin-top: 8px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px 16px;
    color: var(--color-on-surface-variant);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* Avatar */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--color-on-primary);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
    background-color: var(--color-surface-variant);
}

/* Chips */
.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chip {
    padding: 8px 16px;
    border-radius: 16px;
    background-color: var(--color-surface-variant);
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s;
    border: none;
    color: var(--color-on-surface);
}

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

.chip.active {
    background-color: var(--color-primary);
}

/* Dialog */
.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

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

.dialog {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 24px;
    max-width: 90%;
    max-height: 80%;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.dialog h3 {
    margin-bottom: 16px;
}

.dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 24px;
}

/* Player */
.player {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    padding: 16px;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.3);
    z-index: 100;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.player-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-primary);
    border: none;
    color: var(--color-on-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

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

.player-info {
    flex: 1;
    min-width: 0;
}

.player-title {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.player-progress {
    width: 100%;
    height: 4px;
    background-color: var(--color-surface-variant);
    border-radius: 2px;
    margin-top: 8px;
    cursor: pointer;
}

.player-progress-bar {
    height: 100%;
    background-color: var(--color-accent);
    border-radius: 2px;
    width: 0%;
    transition: width 0.1s;
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.p-1 { padding: 8px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }
.p-4 { padding: 32px; }
.hidden { display: none !important; }
.flex { display: flex; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.w-full { width: 100%; }
.h-full { height: 100%; }

/* Icons (base64 svg) */
.icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    background-size: contain;
    background-repeat: no-repeat;
}

.icon-home::before { content: "🏠"; }
.icon-search::before { content: "🔍"; }
.icon-favorite::before { content: "❤️"; }
.icon-play::before { content: "▶️"; }
.icon-pause::before { content: "⏸️"; }
.icon-back::before { content: "⬅️"; }
.icon-menu::before { content: "☰"; }
.icon-filter::before { content: "⚙️"; }
.icon-logout::before { content: "🚪"; }
.icon-book::before { content: "📚"; }
.icon-movie::before { content: "🎬"; }
.icon-audio::before { content: "🎧"; }
/* Favorite icons */
.icon-favorite-border::before { content: "🤍"; }
.icon-favorite-filled::before { content: "❤️"; }

/* Responsive */
@media (max-width: 600px) {
    .display-large { font-size: 36px; }
    .display-medium { font-size: 28px; }
    .display-small { font-size: 24px; }
    .headline-large { font-size: 24px; }
    .headline-medium { font-size: 20px; }
    
    .hide-mobile { display: none !important; }
}

@media (min-width: 601px) {
    .hide-desktop { display: none !important; }
}

/* Splash Screen */
.splash-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #512DA8 0%, #673AB7 50%, #9575CD 100%);
}

.splash-content {
    text-align: center;
    padding: 32px;
}

.splash-title {
    font-size: 36px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 8px;
    animation: fadeInUp 0.5s ease-out;
}

/* Auth Pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-title {
    font-size: 28px;
    text-align: center;
    margin-bottom: 8px;
}

.auth-subtitle {
    font-size: 16px;
    text-align: center;
    color: var(--color-on-surface-variant);
    margin-bottom: 32px;
}

.auth-link {
    text-align: center;
    margin-top: 16px;
    color: var(--color-on-surface-variant);
}

.auth-link a {
    color: var(--color-accent);
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

.splash-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
    animation: fadeInUp 0.5s ease-out 0.2s both;
}

.splash-page .loader {
    animation: fadeInUp 0.5s ease-out 0.4s both;
}

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

/* Home Screen */
.home-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.home-page h2 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 48px;
    max-width: 400px;
}

.home-page .btn {
    max-width: 300px;
    margin: 0 auto 16px;
}