/**
 * Contador de Caracteres - Styles
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 */

/* ===== CSS VARIABLES ===== */
:root {
    /* Paleta de cores fornecida */
    --color-primary: #833AB4;
    --color-secondary: #FD1D1D;
    --color-accent-1: #F77737;
    --color-accent-2: #FCAF45;
    --color-accent-3: #FFDC80;
    
    /* Cores de status */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;
    
    /* Cores neutras */
    --color-bg: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-border: #e2e8f0;
    --color-shadow: rgba(0, 0, 0, 0.1);
    
    /* Espaçamento */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Tipografia */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transições */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: 140px;
}

/* ===== 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(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ===== CONTAINER ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}
.black-bar {
position: fixed;
bottom: 0;
left: 0;
right: 0;
height: 30px;
background-color: #000000;
z-index: 1001;
}
/* ===== HEADER ===== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(131, 58, 180, 0.98) 0%, rgba(247, 119, 55, 0.98) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 999;
    transition: all var(--transition-base);
}

.app-header.scrolled {
    padding: var(--spacing-sm) 0;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.2);
    background: linear-gradient(135deg, rgba(131, 58, 180, 0.95) 0%, rgba(247, 119, 55, 0.95) 100%);
}

.app-header.scrolled .header-logo {
    height: 50px;
}

.app-header.scrolled h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: 0;
}

.app-header.scrolled .subtitle {
    display: none;
}

.app-header h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: nowrap;
}

.header-logo {
    height: 70px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 3px 10px rgba(0, 0, 0, 0.25));
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.header-logo:hover {
    transform: scale(1.05);
}

.app-header .subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.95;
    font-weight: 400;
}

/* ===== SECTIONS ===== */
main {
    padding-bottom: var(--spacing-2xl);
}

section {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-title i {
    color: var(--color-primary);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

/* ===== PLATFORM SELECTION ===== */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.platform-card {
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    min-height: 120px;
}

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

.platform-card.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-1) 100%);
    color: white;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.platform-card i {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.platform-card.active i {
    color: white;
}

.platform-name {
    font-weight: 600;
    font-size: var(--font-size-base);
}

.platform-limit {
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

/* ===== TEXT INPUT ===== */
.textarea-wrapper {
    position: relative;
}

.text-input {
    width: 100%;
    min-height: 200px;
    padding: var(--spacing-lg);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    resize: vertical;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    background: var(--color-bg);
}

.text-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(131, 58, 180, 0.1);
    outline: none;
}

.clear-btn {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--color-danger);
    color: white;
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    opacity: 0;
    pointer-events: none;
}

.text-input:not(:placeholder-shown) ~ .clear-btn {
    opacity: 1;
    pointer-events: all;
}

.clear-btn:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* ===== COUNTER DISPLAY ===== */
.counter-section {
    text-align: center;
}

.counter-display {
    margin-bottom: var(--spacing-lg);
}

.counter-main {
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.counter-value {
    transition: color var(--transition-base);
}

.counter-separator {
    opacity: 0.5;
    margin: 0 var(--spacing-xs);
}

.counter-limit {
    opacity: 0.7;
}

.counter-label {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Status colors */
.counter-value.status-safe {
    color: var(--color-success);
}

.counter-value.status-warning {
    color: var(--color-warning);
}

.counter-value.status-danger {
    color: var(--color-danger);
}

/* ===== PROGRESS BAR ===== */
.progress-bar-container {
    width: 100%;
    height: 12px;
    background: var(--color-bg-tertiary);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-success) 0%, var(--color-success) 100%);
    border-radius: 999px;
    transition: width var(--transition-base), background var(--transition-base);
    width: 0%;
}

.progress-bar.status-warning {
    background: linear-gradient(90deg, var(--color-warning) 0%, var(--color-accent-2) 100%);
}

.progress-bar.status-danger {
    background: linear-gradient(90deg, var(--color-danger) 0%, var(--color-secondary) 100%);
}

/* ===== COUNTER STATS ===== */
.counter-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.stat-item i {
    color: var(--color-primary);
}

.stat-item span {
    font-weight: 600;
    color: var(--color-text);
}

/* ===== STATUS MESSAGE ===== */
.status-message {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--color-bg-secondary);
    border-left: 4px solid var(--color-info);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.status-message i {
    font-size: var(--font-size-xl);
    color: var(--color-info);
}

.status-message.status-warning {
    background: #fef3c7;
    border-left-color: var(--color-warning);
}

.status-message.status-warning i {
    color: var(--color-warning);
}

.status-message.status-danger {
    background: #fee2e2;
    border-left-color: var(--color-danger);
}

.status-message.status-danger i {
    color: var(--color-danger);
}

/* ===== SUGGESTIONS ===== */
.suggestions-box {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 2px solid var(--color-accent-2);
}

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

.suggestions-title i {
    color: var(--color-accent-2);
}

.suggestions-list {
    list-style: none;
}

.suggestions-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--color-text-secondary);
}

.suggestions-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-accent-2);
    font-weight: 700;
}

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

.history-item {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border-left: 4px solid var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.history-item:hover {
    background: var(--color-bg-tertiary);
    transform: translateX(4px);
}

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

.history-item-platform {
    font-weight: 600;
    color: var(--color-primary);
}

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

.history-item-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-item-stats {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ===== BUTTONS ===== */
.btn-secondary {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-secondary:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

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

.faq-item {
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base);
}

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

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

.faq-question:hover {
    background: var(--color-bg-tertiary);
}

.faq-question[aria-expanded="true"] {
    background: var(--color-primary);
    color: white;
}

.faq-icon {
    font-size: var(--font-size-xl);
    font-weight: 400;
    transition: transform var(--transition-base);
}

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

.faq-answer {
    padding: var(--spacing-lg);
    background: var(--color-bg);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.faq-answer[hidden] {
    display: none;
}

/* ===== FOOTER ===== */
.app-footer {
    background: linear-gradient(135deg, var(--color-text) 0%, #0f172a 100%);
    color: white;
    padding: var(--spacing-2xl) 0;
    text-align: center;
    margin-top: var(--spacing-2xl);
    margin-bottom: 30px;
}

.app-footer p {
    margin-bottom: var(--spacing-sm);
}

.b20-link {
    color: var(--color-accent-2);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
}

.b20-link:hover {
    color: var(--color-accent-3);
    text-decoration: underline;
    transform: scale(1.05);
    display: inline-block;
}

.footer-note {
    font-size: var(--font-size-sm);
    opacity: 0.7;
    margin-top: var(--spacing-md);
}

/* ===== BOTTOM NAVIGATION (MOBILE) ===== */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(131, 58, 180, 0.97) 0%, rgba(247, 119, 55, 0.97) 100%);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 -4px 25px rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    z-index: 1000;
    padding: var(--spacing-xs) var(--spacing-sm) calc(var(--spacing-xs) + env(safe-area-inset-bottom));
    margin-bottom: 80px;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    flex: 1;
    padding: 10px var(--spacing-sm);
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: all var(--transition-base);
    border-radius: var(--radius-md);
    position: relative;
    min-height: 56px;
}

.bottom-nav-item i {
    font-size: 1.3rem;
    transition: all var(--transition-fast);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.bottom-nav-item span {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.bottom-nav-item:hover {
    color: rgba(255, 255, 255, 0.95);
    background: rgba(255, 255, 255, 0.1);
}

.bottom-nav-item:active {
    transform: scale(0.95);
}

.bottom-nav-item.active {
    color: white;
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.bottom-nav-item.active i {
    transform: scale(1.2);
}

.bottom-nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 35px;
    height: 3px;
    background: white;
    border-radius: 0 0 3px 3px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.bottom-nav-item.active::before {
    opacity: 1;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.25rem;
    }
    
    /* Show bottom navigation */
    .bottom-nav {
        display: flex;
    }
    
    /* Add padding to body to prevent content being covered */
    body {
        padding-top: 130px;
        padding-bottom: 80px;
    }
    
    .app-header {
        padding: var(--spacing-md) 0;
    }
    
    .app-header h1 {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--spacing-md);
        font-size: var(--font-size-2xl);
    }
    
    .header-logo {
        height: 60px;
    }
    
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .counter-main {
        font-size: 3rem;
    }
    
    .counter-stats {
        gap: var(--spacing-md);
    }
    
    .stat-item {
        font-size: var(--font-size-sm);
    }
    
    section {
        padding: var(--spacing-lg);
    }
    
    .section-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    body {
        padding-top: 120px;
    }
    
    .app-header {
        padding: var(--spacing-sm) 0;
    }
    
    .platform-grid {
        grid-template-columns: 1fr;
    }
    
    .header-logo {
        height: 50px;
    }
    
    .app-header h1 {
        font-size: var(--font-size-xl);
        flex-wrap: wrap;
    }
    
    .counter-main {
        font-size: 2.5rem;
    }
    
    .counter-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .app-footer {
        margin-bottom: var(--spacing-md);
    }
}

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

.faq-answer:not([hidden]) {
    animation: fadeIn var(--transition-base);
}

/* ===== PRINT STYLES ===== */
@media print {
    .app-header,
    .app-footer,
    .platform-section,
    .clear-btn,
    .btn-secondary,
    .faq-section,
    .bottom-nav {
        display: none;
    }
    
    section {
        box-shadow: none;
        page-break-inside: avoid;
    }
}