/**
 * Tradutor de Voz - Stylesheet
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 */

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors - Spotify-inspired palette */
    --primary-color: #1DB954;
    --primary-dark: #1aa34a;
    --primary-light: #1ED760;
    --primary-hover: #1ED760;
    --primary-active: #169c42;
    --primary-alpha-10: rgba(29, 185, 84, 0.1);
    --primary-alpha-20: rgba(29, 185, 84, 0.2);
    --primary-alpha-30: rgba(29, 185, 84, 0.3);
    --bg-dark: #191414;
    --bg-light: #FFFFFF;
    --surface-dark: #282828;
    --surface-light: #F5F5F5;
    --surface-hover: rgba(255, 255, 255, 0.05);
    --text-dark: #FFFFFF;
    --text-light: #191414;
    --text-muted: #535353;
    --text-disabled: #999999;
    --border-color: #404040;
    --border-hover: #1DB954;
    --error-color: #E74C3C;
    --error-light: #ff6b6b;
    --success-color: #1DB954;
    --success-light: #51cf66;
    --warning-color: #F39C12;
    --warning-light: #ffd43b;
    --info-color: #3498db;
    --info-light: #74b9ff;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    
    /* Layout */
    --header-height: 60px;
    --menu-nav-height: 50px;
    --bottom-nav-height: 65px;
    --max-width: 1200px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    --shadow-primary: 0 4px 20px rgba(29, 185, 84, 0.3);
    --shadow-primary-hover: 0 8px 30px rgba(29, 185, 84, 0.4);
}

/* Dark Mode Variables */
body.dark-mode {
    --bg-primary: var(--bg-dark);
    --bg-secondary: var(--surface-dark);
    --text-primary: var(--text-dark);
    --text-secondary: var(--text-muted);
    --border: var(--border-color);
}

/* Light Mode Variables (Default) */
body {
    --bg-primary: var(--bg-light);
    --bg-secondary: var(--surface-light);
    --text-primary: var(--text-light);
    --text-secondary: var(--text-muted);
    --border: #E0E0E0;
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* ===== ACCESSIBILITY ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

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

/* ===== HEADER ===== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.header-left {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.theme-toggle {
    display: flex;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-base);
    flex-shrink: 0;
    min-width: 40px;
    min-height: 40px;
    align-items: center;
    justify-content: center;
    position: relative;
}

.theme-toggle:hover {
    background-color: var(--primary-alpha-10);
    color: var(--primary-color);
    transform: scale(1.1);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle i {
    transition: transform var(--transition-base);
}

.theme-toggle:hover i {
    transform: rotate(15deg);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    flex-shrink: 0;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
}

.menu-toggle:hover {
    background-color: rgba(29, 185, 84, 0.1);
    color: var(--primary-color);
}

.menu-toggle.active {
    color: var(--primary-color);
}

.app-header h1 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
    white-space: nowrap;
    overflow: visible;
    text-overflow: clip;
    flex-shrink: 1;
    min-width: 0;
}

.header-logo {
    height: 32px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
    display: block;
}

.header-title {
    display: inline-block;
}

@media (max-width: 768px) {
    .header-logo {
        height: 28px;
    }
    
    .app-header h1 {
        font-size: var(--font-size-xl);
    }
}

@media (max-width: 480px) {
    .header-logo {
        height: 24px;
    }
    
    .app-header h1 {
        font-size: 0.75rem;
        gap: var(--spacing-xs);
    }
    
    .header-title {
        display: inline-block; /* Sempre visível */
        font-size: 1.2rem;
    }
}

.status-indicators {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: nowrap;
    align-items: center;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.status-badge i {
    font-size: var(--font-size-sm);
}

.status-badge.online {
    color: var(--success-color);
}

.status-badge.offline {
    color: var(--error-color);
}

/* ===== MENU NAVIGATION ===== */
.menu-nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    height: var(--menu-nav-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: var(--spacing-lg);
    transition: all var(--transition-base);
}

.menu-nav .nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-sm);
    border-bottom: 2px solid transparent;
    position: relative;
    white-space: nowrap;
}

.menu-nav .nav-item i {
    font-size: var(--font-size-base);
}

.menu-nav .nav-item:hover {
    color: var(--primary-color);
    background-color: var(--primary-alpha-10);
    transform: translateY(-2px);
}

.menu-nav .nav-item.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background-color: var(--primary-alpha-10);
    font-weight: 700;
}

.menu-nav .nav-item.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    animation: slideIn var(--transition-base);
}

@keyframes slideIn {
    from {
        transform: scaleX(0);
    }
    to {
        transform: scaleX(1);
    }
}

/* ===== MAIN CONTENT ===== */
.app-main {
    margin-top: calc(var(--header-height) + var(--menu-nav-height));
    padding: var(--spacing-lg) var(--spacing-md);
    min-height: calc(100vh - var(--header-height) - var(--menu-nav-height));
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.app-section {
    display: none;
    animation: fadeIn var(--transition-base);
}

.app-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== LANGUAGE SELECTOR ===== */
.language-selector {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    align-items: end;
}

.lang-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.lang-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.lang-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%231DB954' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-sm) center;
    padding-right: calc(var(--spacing-md) + 20px);
}

.lang-select:hover {
    border-color: var(--primary-color);
    background-color: var(--primary-alpha-10);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.lang-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-alpha-20);
    outline: none;
}

.lang-select:active {
    transform: translateY(0);
}

.swap-languages {
    width: 44px;
    height: 44px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.swap-languages:hover {
    background-color: var(--primary-dark);
    transform: rotate(180deg);
}

.swap-languages:active {
    transform: rotate(180deg) scale(0.95);
}

/* ===== RECORDING SECTION ===== */
.recording-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
    margin: var(--spacing-xxl) 0;
    padding: var(--spacing-xl) 0;
    position: relative;
}

.recording-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--primary-alpha-10) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0.5;
    z-index: 0;
    pointer-events: none;
}

.record-button {
    width: 160px;
    height: 160px;
    min-width: 160px;
    min-height: 160px;
    max-width: 160px;
    max-height: 160px;
    aspect-ratio: 1 / 1;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: 600;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.12),
        0 4px 16px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-md);
    box-sizing: border-box;
    z-index: 1;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    flex-shrink: 0;
}

.record-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-alpha-20) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base), opacity var(--transition-base);
    opacity: 0;
    z-index: -1;
}

.record-button::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -2;
}

.record-button:hover {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--primary-alpha-10) 100%);
    transform: scale(1.05) translateY(-4px);
    box-shadow: 
        0 12px 40px rgba(29, 185, 84, 0.2),
        0 8px 24px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.record-button:hover::before {
    width: 180%;
    height: 180%;
    opacity: 1;
}

.record-button:hover::after {
    opacity: 0.3;
}

.record-button:hover .record-icon {
    color: var(--primary-color);
    transform: scale(1.1) translateY(-2px);
    filter: drop-shadow(0 4px 8px rgba(29, 185, 84, 0.3));
}

.record-button:hover .record-text {
    color: var(--primary-color);
    font-weight: 600;
    transform: translateY(-1px);
}

.record-button:active {
    transform: scale(0.98) translateY(-2px);
    box-shadow: 
        0 6px 20px rgba(29, 185, 84, 0.15),
        0 4px 12px rgba(0, 0, 0, 0.1),
        inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.record-button:focus-visible {
    outline: none;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.12),
        0 4px 16px rgba(0, 0, 0, 0.08),
        0 0 0 4px var(--primary-alpha-30),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.record-button.recording {
    background: linear-gradient(135deg, #E74C3C 0%, #C0392B 50%, #A93226 100%);
    color: white;
    animation: pulseRecording 1.5s ease-in-out infinite;
    box-shadow: 
        0 0 0 0 rgba(231, 76, 60, 0.7),
        0 12px 40px rgba(231, 76, 60, 0.4),
        0 8px 24px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.record-button.recording::before {
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    width: 100%;
    height: 100%;
    opacity: 1;
    animation: pulseRing 1.5s ease-in-out infinite;
}

.record-button.recording::after {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.1));
    opacity: 1;
}

@keyframes pulseRing {
    0%, 100% {
        opacity: 0.4;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.15);
    }
}

@keyframes pulseRecording {
    0% {
        transform: scale(1);
        box-shadow: 
            0 0 0 0 rgba(231, 76, 60, 0.7),
            0 12px 40px rgba(231, 76, 60, 0.4),
            0 8px 24px rgba(0, 0, 0, 0.2),
            inset 0 1px 0 rgba(255, 255, 255, 0.2);
    }
    50% {
        transform: scale(1.03);
        box-shadow: 
            0 0 0 20px rgba(231, 76, 60, 0),
            0 16px 48px rgba(231, 76, 60, 0.5),
            0 12px 32px rgba(0, 0, 0, 0.25),
            inset 0 1px 0 rgba(255, 255, 255, 0.25);
    }
    100% {
        transform: scale(1);
        box-shadow: 
            0 0 0 0 rgba(231, 76, 60, 0),
            0 12px 40px rgba(231, 76, 60, 0.4),
            0 8px 24px rgba(0, 0, 0, 0.2),
            inset 0 1px 0 rgba(255, 255, 255, 0.2);
    }
}

.record-icon {
    font-size: 2.5rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.record-button:hover .record-icon {
    color: var(--primary-color);
}

.record-button.recording .record-icon {
    color: white;
    animation: none;
}

.record-text {
    font-size: 0.7rem;
    text-align: center;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
    transition: all var(--transition-base);
    font-weight: 500;
    line-height: 1.2;
    white-space: normal;
    word-wrap: break-word;
    max-width: calc(100% - var(--spacing-xs) * 2);
    padding: 0 var(--spacing-xs);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    flex-shrink: 1;
}

.record-button:hover .record-text {
    color: var(--primary-color);
    font-weight: 600;
}

.record-button.recording .record-text {
    color: white;
    font-weight: 600;
}

.recording-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--error-color);
    font-weight: 600;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.15) 0%, rgba(192, 57, 43, 0.1) 100%);
    border: 2px solid var(--error-color);
    border-radius: 50px;
    box-shadow: 
        0 4px 16px rgba(231, 76, 60, 0.3),
        0 2px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    animation: slideUp var(--transition-base);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
}

.pulse {
    width: 14px;
    height: 14px;
    background: linear-gradient(135deg, var(--error-color) 0%, #C0392B 100%);
    border-radius: 50%;
    animation: pulseDot 1.2s ease-in-out infinite;
    box-shadow: 
        0 0 0 0 rgba(231, 76, 60, 0.7),
        0 2px 8px rgba(231, 76, 60, 0.4),
        inset 0 1px 2px rgba(255, 255, 255, 0.3);
    position: relative;
}

.pulse::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    animation: pulseInner 1.2s ease-in-out infinite;
}

@keyframes pulseDot {
    0% {
        opacity: 1;
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.7);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.2);
        box-shadow: 0 0 0 4px rgba(231, 76, 60, 0);
    }
    100% {
        opacity: 1;
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0);
    }
}


/* ===== TRANSCRIPTION DISPLAY ===== */
.transcription-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .transcription-container {
        grid-template-columns: 1fr 1fr;
    }
}

.transcription-box {
    background-color: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

.transcription-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.transcription-box:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.transcription-box:hover::before {
    transform: scaleX(1);
}

.box-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border);
}

.box-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.box-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.copy-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-sm);
    position: relative;
}

.copy-btn::after {
    content: 'Copiado!';
    position: absolute;
    top: -35px;
    left: 50%;
    transform: translateX(-50%) scale(0);
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    white-space: nowrap;
    opacity: 0;
    transition: all var(--transition-fast);
    pointer-events: none;
    z-index: 10;
}

.copy-btn:hover {
    color: var(--primary-color);
    background-color: var(--primary-alpha-10);
    transform: scale(1.1);
}

.copy-btn:active {
    transform: scale(0.95);
}

.copy-btn.copied::after {
    transform: translateX(-50%) scale(1);
    opacity: 1;
}

.translate-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.translate-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.translate-btn:active {
    transform: translateY(0);
}

.translate-btn i {
    font-size: var(--font-size-base);
}

.box-content {
    padding: var(--spacing-lg);
    min-height: 150px;
    max-height: 300px;
    overflow-y: auto;
    font-size: var(--font-size-base);
    line-height: 1.8;
}

.box-content .placeholder {
    color: var(--text-secondary);
    font-style: italic;
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ===== PROCESSING STATUS ===== */
.processing-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    background: linear-gradient(135deg, var(--bg-secondary), var(--primary-alpha-10));
    border-radius: var(--border-radius);
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-md);
    animation: fadeIn var(--transition-base);
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(29, 185, 84, 0.2);
    border-top-color: var(--primary-color);
    border-right-color: var(--primary-light);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    position: relative;
}

.spinner::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

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

/* ===== HISTORY SECTION ===== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--primary-color);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
    z-index: 0;
}

.btn-secondary span,
.btn-secondary i {
    position: relative;
    z-index: 1;
}

.btn-secondary:hover {
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover::before {
    width: 300%;
    height: 300%;
}

.history-filters {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.search-input,
.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: all var(--transition-fast);
}

.search-input:focus,
.filter-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(29, 185, 84, 0.2);
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.history-item {
    background-color: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: all var(--transition-fast);
}

.history-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
}

.history-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.history-date {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.history-langs {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-color);
}

.history-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-sm);
    position: relative;
    min-width: 36px;
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--primary-alpha-10);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
}

.icon-btn:hover::before {
    width: 100%;
    height: 100%;
}

.icon-btn:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

.icon-btn:active {
    transform: scale(0.95);
}

.icon-btn.delete:hover {
    color: var(--error-color);
}

.icon-btn.delete::before {
    background: rgba(231, 76, 60, 0.1);
}

.history-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .history-content {
        grid-template-columns: 1fr 1fr;
    }
}

.history-text {
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--primary-color);
}

.history-text strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--text-secondary);
    animation: fadeIn var(--transition-base);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.4;
    color: var(--text-muted);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.empty-state p {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.empty-state small {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ===== ABOUT SECTION ===== */
.about-intro {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    padding: var(--spacing-xl) 0;
}

.about-logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.about-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
}

.about-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

.about-section {
    background-color: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.about-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.use-case-card {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.use-case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.use-case-card:hover::before {
    transform: scaleX(1);
}

.use-case-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: white;
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-md);
}

.use-case-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.use-case-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.use-case-card li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
}

.use-case-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 600;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

.feature-item:hover {
    background-color: var(--primary-alpha-10);
    border-color: var(--primary-color);
    transform: translateX(4px);
}

.feature-item i {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-item h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-item p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.how-to-use {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.step-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--primary-alpha-10) 100%);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    transition: all var(--transition-base);
}

.step-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.step-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.tech-stack {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.tech-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--primary-alpha-10);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.tech-badge:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.about-footer {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
    border-top: 2px solid var(--border);
}

.about-footer p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.about-footer strong {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

@media (max-width: 768px) {
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .about-logo {
        height: 60px;
    }
    
    .about-description {
        font-size: var(--font-size-base);
    }
    
    .step-card {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        margin: 0 auto;
    }
}

/* ===== SETTINGS SECTION ===== */
.settings-group {
    background-color: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.settings-group h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border);
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-item label {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

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

.toggle-switch {
    position: relative;
    width: 50px;
    height: 26px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border);
    transition: var(--transition-base);
    border-radius: 26px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.toggle-slider::before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: var(--transition-base);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

input:checked + .toggle-slider {
    background-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-alpha-20);
}

input:checked + .toggle-slider::before {
    transform: translateX(24px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.toggle-switch:hover .toggle-slider {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

input:checked + .toggle-slider:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 0 0 3px var(--primary-alpha-30);
}

.settings-actions {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
}

/* ===== SHARE SECTION ===== */
.share-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.share-url-container {
    display: flex;
    gap: var(--spacing-sm);
    align-items: stretch;
}

.share-url-input {
    flex: 1;
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    transition: all var(--transition-fast);
}

.share-url-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-alpha-20);
}

.btn-copy-url {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
}

.btn-copy-url:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-copy-url:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-copy-url.copied {
    background-color: var(--success-color);
}

.share-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-sm);
}

.share-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: currentColor;
}

.share-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.share-btn i {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.share-facebook {
    color: #1877F2;
}

.share-facebook:hover {
    background-color: rgba(24, 119, 242, 0.1);
    border-color: #1877F2;
}

.share-twitter {
    color: #1DA1F2;
}

.share-twitter:hover {
    background-color: rgba(29, 161, 242, 0.1);
    border-color: #1DA1F2;
}

.share-whatsapp {
    color: #25D366;
}

.share-whatsapp:hover {
    background-color: rgba(37, 211, 102, 0.1);
    border-color: #25D366;
}

.share-linkedin {
    color: #0077B5;
}

.share-linkedin:hover {
    background-color: rgba(0, 119, 181, 0.1);
    border-color: #0077B5;
}

.share-telegram {
    color: #0088CC;
}

.share-telegram:hover {
    background-color: rgba(0, 136, 204, 0.1);
    border-color: #0088CC;
}

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

.share-email:hover {
    background-color: var(--primary-alpha-10);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .share-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .share-url-container {
        flex-direction: column;
    }
    
    .btn-copy-url {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .share-buttons {
        grid-template-columns: 1fr;
    }
}

.btn-danger {
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--error-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-danger::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
}

.btn-danger:hover {
    background-color: #C0392B;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.4);
}

.btn-danger:hover::before {
    width: 300%;
    height: 300%;
}

.btn-danger:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(231, 76, 60, 0.3);
}

/* ===== FAQ SECTION ===== */
.faq-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background-color: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-icon {
    font-size: var(--font-size-xl);
    font-weight: 300;
    transition: transform var(--transition-fast);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    animation: slideDown var(--transition-base);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.faq-answer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.faq-answer a:hover {
    text-decoration: underline;
}

/* ===== BOTTOM NAVIGATION ===== */

/* ===== FOOTER ===== */
.app-footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.footer-logo-container {
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
    opacity: 0.8;
    transition: opacity var(--transition-base);
}

.footer-logo:hover {
    opacity: 1;
}

.app-footer p {
    margin: var(--spacing-xs) 0;
}

.b20-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.b20-link:hover {
    text-decoration: underline;
    transform: scale(1.05);
    display: inline-block;
}

.footer-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.footer-link:hover {
    text-decoration: underline;
    color: var(--primary-dark);
}

/* ===== FLOATING HOME BUTTON ===== */
.floating-home-btn {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: none; /* Oculto por padrão, será mostrado via JavaScript */
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 8px 24px rgba(29, 185, 84, 0.4),
        0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 999;
    transition: all var(--transition-base);
    text-decoration: none;
    overflow: hidden;
    border: 3px solid white;
}

.floating-home-btn:not([hidden]) {
    display: flex;
}

.floating-home-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
}

.floating-home-btn:hover {
    transform: scale(1.1) translateY(-4px);
    box-shadow: 
        0 12px 32px rgba(29, 185, 84, 0.5),
        0 6px 16px rgba(0, 0, 0, 0.2);
}

.floating-home-btn:hover::before {
    width: 100%;
    height: 100%;
}

.floating-home-btn:active {
    transform: scale(0.95) translateY(-2px);
    box-shadow: 
        0 6px 16px rgba(29, 185, 84, 0.4),
        0 3px 8px rgba(0, 0, 0, 0.15);
}

.floating-home-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    position: relative;
    z-index: 1;
    filter: brightness(0) invert(1);
}

@media (max-width: 768px) {
    .floating-home-btn {
        width: 56px;
        height: 56px;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .floating-home-logo {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 480px) {
    .floating-home-btn {
        width: 48px;
        height: 48px;
        bottom: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .floating-home-logo {
        width: 32px;
        height: 32px;
    }
}

/* ===== TOAST NOTIFICATION ===== */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--bg-dark);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    transition: transform var(--transition-base);
    max-width: 90%;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast-icon {
    font-size: var(--font-size-xl);
}

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

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

.toast.warning .toast-icon {
    color: var(--warning-color);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .menu-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        max-height: 0;
        overflow: hidden;
        padding: 0 var(--spacing-md);
        border-top: none;
        height: auto;
        transition: max-height var(--transition-base), padding var(--transition-base);
    }

    .menu-nav.active {
        max-height: 400px;
        padding: var(--spacing-sm) var(--spacing-md);
        border-top: 1px solid var(--border);
    }

    /* No mobile, o menu é colapsável, então o margin-top só precisa do header */
    .app-main {
        margin-top: var(--header-height);
    }

    .header-content {
        flex-wrap: nowrap;
        gap: var(--spacing-xs);
    }

    .header-left {
        flex: 1;
        min-width: 0;
        overflow: visible; /* Permitir que o título seja visível */
    }

    .header-right {
        flex-shrink: 0;
        gap: var(--spacing-xs);
    }

    .app-header h1 {
        font-size: var(--font-size-lg);
        gap: var(--spacing-xs);
    }

    .app-header h1 i {
        font-size: var(--font-size-lg);
    }

    .status-indicators {
        display: flex;
        gap: var(--spacing-xs);
    }

    .status-badge .status-text {
        display: none;
    }

    .status-badge {
        padding: var(--spacing-xs);
        min-width: 32px;
        min-height: 32px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .status-badge i {
        font-size: var(--font-size-base);
        margin: 0;
    }

    .theme-toggle {
        min-width: 36px;
        min-height: 36px;
        padding: var(--spacing-xs);
        font-size: var(--font-size-base);
    }

    .menu-toggle {
        display: flex;
    }

    .language-selector {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .swap-languages {
        justify-self: center;
        order: 2;
    }
    
    .lang-group:first-child {
        order: 1;
    }
    
    .lang-group:last-child {
        order: 3;
    }
    
    .record-button {
        width: 140px;
        height: 140px;
        min-width: 140px;
        min-height: 140px;
        max-width: 140px;
        max-height: 140px;
    }
    
    .record-icon {
        font-size: 2rem;
    }
    
    .record-text {
        font-size: 0.65rem;
    }
    
    .recording-section::before {
        width: 250px;
        height: 250px;
    }
    
    .record-icon {
        font-size: 2rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .history-filters {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-base: 0.9375rem;
        --spacing-md: 0.875rem;
    }
    
    .header-content {
        padding: 0 var(--spacing-sm);
        gap: var(--spacing-xs);
    }

    .app-header h1 {
        font-size: 0.75rem;
        gap: var(--spacing-xs);
    }
    
    .header-title {
        display: inline-block;
        font-size: 1.2rem;
    }
    
    .header-logo {
        height: 20px;
    }

    .status-indicators {
        gap: var(--spacing-xs);
    }

    .status-badge {
        min-width: 28px;
        min-height: 28px;
        padding: var(--spacing-xs);
    }

    .status-badge i {
        font-size: 0.875rem;
    }

    .menu-toggle {
        min-width: 40px;
        min-height: 40px;
        padding: var(--spacing-xs);
    }
    
    .record-button {
        width: 120px;
        height: 120px;
        min-width: 120px;
        min-height: 120px;
        max-width: 120px;
        max-height: 120px;
    }
    
    .record-icon {
        font-size: 1.8rem;
    }
    
    .record-text {
        font-size: 0.6rem;
    }
    
    .recording-section::before {
        width: 200px;
        height: 200px;
    }
    
    .recording-indicator {
        padding: var(--spacing-sm) var(--spacing-md);
        gap: var(--spacing-sm);
    }
}

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

/* ===== PRINT STYLES ===== */
@media print {
    .app-header,
    .menu-nav,
    .app-footer,
    .recording-section,
    .settings-section {
        display: none;
    }
    
    .app-main {
        margin-top: var(--header-height);
        padding: 0;
    }
    
    .transcription-container {
        page-break-inside: avoid;
    }
}