/**
 * JOSYCINTA'S CHAT - Stylesheet Principal
 * Design moderno, responsivo e acessível
 */

/* ================================================
   VARIÁVEIS CSS (Design System)
   ================================================ */
:root {
    /* Cores principais (fonte única da verdade do design system) - Premium Pink Palette */
    --color-primary: #D81B60;
    --color-primary-dark: #AD1457;
    --color-primary-light: #F48FB1;
    --color-primary-rgb: 216, 27, 96;
    --color-secondary: #C2185B;
    --color-secondary-dark: #880E4F;

    /* Cores de estado */
    --color-success: #52C41A;
    --color-warning: #FAAD14;
    --color-error: #F5222D;
    --color-info: #1890FF;

    /* Cores neutras */
    --color-bg: #FDFBFB;
    --color-bg-light: #FFFFFF;
    --color-bg-dark: #F4F1F2;
    --color-text: #2C3539;
    --color-text-light: #6A7074;
    --color-text-muted: #9BA0A3;
    --color-border: #E8E4E5;

    /* Cores do chat */
    --color-user-msg: #D81B60;
    --color-bot-msg: #FFFFFF;
    --color-user-text: #FFFFFF;
    --color-bot-text: #2C3539;

    /* Sombras - Premium diffuse shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 15px 35px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 25px 50px rgba(0, 0, 0, 0.08);
    --shadow-glass: 0 8px 32px rgba(216, 27, 96, 0.08);

    /* Glassmorphism (uso moderado: navbar, modais, cards de destaque —
       blur custa performance em listas longas e pode reduzir legibilidade) */
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-bg-dark: rgba(244, 241, 242, 0.65);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-blur: 16px;

    /* Bordas */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Espaçamentos */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Playfair Display', serif;

    /* Animações - Premium easing curves */
    --transition-fast: 150ms cubic-bezier(0.25, 1, 0.5, 1);
    --transition-base: 300ms cubic-bezier(0.25, 1, 0.5, 1);
    --transition-slow: 500ms cubic-bezier(0.25, 1, 0.5, 1);
}

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

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

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

/* ================================================
   TIPOGRAFIA
   ================================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-md);
}

/* ================================================
   CONTAINER PRINCIPAL
   ================================================ */
.chat-container {
    position: relative !important;
    z-index: 1000 !important;
    font-family: var(--font-primary);
}

/* Modo fullscreen para mobile */
@media (max-width: 768px) {
    .chat-container.expanded {
        bottom: 0;
        right: 0;
        left: 0;
        top: 0;
        width: 100% !important;
        height: 100% !important;
        border-radius: 0 !important;
    }
}

/* ================================================
   BOTÃO FLUTUANTE (FAB)
   ================================================ */
.chat-fab {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    transition: all var(--transition-base), opacity 0.3s ease, transform 0.3s ease;
    will-change: transform;
    position: relative;
    overflow: hidden;
}

.chat-fab:hover {
    transform: scale(1.05) translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.chat-fab:active {
    transform: scale(0.98);
}

.chat-fab::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 0.6s, height 0.6s;
}

.chat-fab:active::before {
    width: 300px;
    height: 300px;
}

/* Badge de notificação */
.chat-fab .badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--color-error);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    border: 3px solid var(--color-bg);
    animation: pulse 2s infinite;
}

/* Rating UI inside chat */
.rating-container {
    margin: 12px;
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.rating-container .rating-btn {
    font-size: 14px;
}

.rating-thanks {
    margin: 12px;
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    padding: 12px 16px;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Efeito de pulsação ao redor do FAB */
.chat-fab::after {
    content: '';
    position: absolute;
    inset: -10px;
    border: 3px solid var(--color-primary);
    border-radius: var(--radius-full);
    animation: pulseRing 2s infinite;
    pointer-events: none;
}

@keyframes pulseRing {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.3);
        opacity: 0;
    }
}

/* ================================================
   FAB LANDING PAGE - Estilos Específicos
   ================================================ */
.chat-fab.landing-fab {
    position: fixed !important;
    bottom: 30px !important;
    right: 30px !important;
    width: 70px !important;
    height: 70px !important;
    border-radius: 50% !important;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%) !important;
    color: white !important;
    border: none !important;
    cursor: pointer !important;
    box-shadow: 0 8px 24px rgba(255, 107, 157, 0.4) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 2rem !important;
    transition: all 0.3s ease, opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease !important;
    z-index: 9999;
    animation: bounceIn 1s ease-out 1s forwards;
    padding: 0 !important;
    margin: 0 !important;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    outline: none !important;
}

.chat-fab.landing-fab::before {
    display: none !important;
    content: none !important;
}

.chat-fab.landing-fab::after {
    display: none !important;
    content: none !important;
}

.chat-fab.landing-fab:hover {
    transform: scale(1.1) !important;
    box-shadow: 0 12px 32px rgba(255, 107, 157, 0.5) !important;
}

.chat-fab.landing-fab:active {
    transform: scale(0.95) !important;
}

.chat-fab.landing-fab img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
}

.chat-fab.landing-fab .pulse {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 3px solid #FF6B9D;
    border-radius: 50%;
    animation: pulseRingLanding 2s ease-in-out infinite;
    pointer-events: none;
    box-sizing: border-box;
}

.chat-fab.landing-fab .pulse::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid #FF6B9D;
    border-radius: 50%;
    animation: pulseRingLanding 2s ease-in-out 0.67s infinite;
}

.chat-fab.landing-fab .pulse::after {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    border: 2px solid #FF6B9D;
    border-radius: 50%;
    animation: pulseRingLanding 2s ease-in-out 1.34s infinite;
}

@media (max-width: 768px) {
    .chat-fab.landing-fab {
        width: 60px !important;
        height: 60px !important;
        bottom: 20px !important;
        right: 20px !important;
    }
    
    .chat-fab.landing-fab .pulse::before {
        top: -6px !important;
        left: -6px !important;
        right: -6px !important;
        bottom: -6px !important;
    }

    .chat-fab.landing-fab .pulse::after {
        top: -12px !important;
        left: -12px !important;
        right: -12px !important;
        bottom: -12px !important;
    }
}

/* Animações para o landing FAB */
@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
    }
}

/* ================================================
   ESCONDER FAB QUANDO CHAT ESTÁ ABERTO
   ================================================ */
/* IMPORTANTE: Estas regras sobrescrevem os estilos do .chat-fab.landing-fab */

/* Esconde FAB quando chat está ativo - prioridade máxima */
.chat-window.active ~ .chat-fab.landing-fab {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transform: scale(0) !important;
    display: none !important;
    z-index: -1 !important;
}

/* Esconde FAB usando :has() para navegadores modernos */
body:has(.chat-window.active) .chat-fab.landing-fab {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transform: scale(0) !important;
    display: none !important;
    z-index: -1 !important;
}

/* Esconde FAB com classe .hidden via JavaScript */
.chat-fab.landing-fab.hidden {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transform: scale(0) !important;
    display: none !important;
    z-index: -1 !important;
}

@keyframes pulseRingLanding {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
    100% {
        transform: scale(1.6);
        opacity: 0;
    }
}

/* Garanta que o body não esconde o FAB */
html, body {
    overflow-y: auto !important;
    overflow-x: hidden !important;
    position: relative !important;
}

/* Ícone da imagem no botão FAB */
.chat-fab-icon {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-full);
    position: relative;
    z-index: 1;
}

/* Imagens dos avatares */
.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-full);
}

/* ================================================
   JANELA DO CHAT
   ================================================ */
.chat-window {
    position: fixed !important;
    bottom: 110px !important;
    right: 30px !important;
    width: 420px;
    height: 650px;
    background: var(--color-bg-light);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: scale(0.8) translateY(20px);
    transform-origin: bottom right;
    transition: all var(--transition-base);
    pointer-events: none;
    z-index: 9998;
}

.chat-window.active {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: all;
}

@media (max-width: 768px) {
    .chat-window {
        position: fixed !important;
        bottom: 0 !important;
        right: 0 !important;
        left: 0 !important;
        top: 0 !important;
        width: 100vw;
        height: 100vh;
        border-radius: 0;
        transform-origin: center;
    }
}

/* ================================================
   HEADER DO CHAT
   ================================================ */
.chat-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.chat-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.chat-header-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 1;
}

.chat-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: var(--shadow-md);
}

.chat-header-info h3 {
    font-size: 1.125rem;
    margin: 0;
    font-weight: 600;
}

.chat-header-info p {
    font-size: 0.875rem;
    margin: 0;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: var(--radius-full);
    display: inline-block;
    animation: pulse-status 2s infinite;
}

.status-indicator.speaking {
    background: #FF6B9D;
    animation: pulse-speaking 0.8s infinite;
}

@keyframes pulse-status {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes pulse-speaking {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.3);
    }
}

.chat-close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all var(--transition-fast);
    z-index: 1;
}

.chat-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

/* ================================================
   ÁREA DE MENSAGENS
   ================================================ */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    background: linear-gradient(to bottom, #f8f9fa 0%, var(--color-bg) 100%);
}

/* Scrollbar customizada */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ================================================
   ANIMAÇÕES
   ================================================ */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes pulse-dot {
    0%, 60%, 100% {
        opacity: 0.3;
        transform: translateY(0);
    }
    30% {
        opacity: 1;
        transform: translateY(-10px);
    }
}

/* ================================================
   ICONES (Phosphor Icons Fix)
   ================================================ */
i.ph, i.ph-fill, i.ph-bold, i.ph-duotone {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
}

/* ================================================
   MENSAGENS
   ================================================ */
.message {
    display: flex;
    gap: var(--spacing-sm);
    animation: slideIn var(--transition-base);
    max-width: 85%;
}

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

.message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.message.bot .message-avatar {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
}

.message.user .message-avatar {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
    color: white;
}

.message-bubble {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    line-height: 1.5;
    font-size: 0.9375rem;
    box-shadow: var(--shadow-sm);
    position: relative;
    word-wrap: break-word;
}

.message.bot .message-bubble {
    background: var(--color-bot-msg);
    color: var(--color-bot-text);
    border-bottom-left-radius: 4px;
}

.message.user .message-bubble {
    background: linear-gradient(135deg, var(--color-user-msg) 0%, var(--color-secondary-dark) 100%);
    color: var(--color-user-text);
    border-bottom-right-radius: 4px;
}

.message-time {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
    text-align: right;
}

.message.bot .message-time {
    text-align: left;
}

/* Efeito de digitação palavra por palavra */
.typing-effect::after {
    content: '';
    display: inline-block;
    width: 2px;
    height: 1em;
    margin-left: 4px;
    background-color: var(--color-bot-text);
    animation: blink 1s infinite;
    vertical-align: middle;
}

@keyframes blink {
    0%, 49% {
        opacity: 1;
    }
    50%, 100% {
        opacity: 0;
    }
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: var(--spacing-md);
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--color-text-muted);
    border-radius: var(--radius-full);
    animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.5;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* ================================================
   INPUT DE MENSAGEM
   ================================================ */
.chat-input-container {
    padding: var(--spacing-lg);
    background: var(--color-bg-light);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
    position: relative;
    z-index: 10;
}

.chat-input-wrapper {
    flex: 1;
    position: relative;
}

.chat-input {
    width: 100%;
    padding: var(--spacing-md);
    padding-right: 48px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    resize: none;
    max-height: 120px;
    transition: all var(--transition-fast);
    background: var(--color-bg-light);
}

.chat-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 157, 0.1);
}

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

.chat-send-btn {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.chat-send-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.chat-send-btn:active:not(:disabled) {
    transform: scale(0.95);
}

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

.chat-voice-btn {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #4CAF50 0%, #3d8b40 100%);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    margin-right: 8px;
}

.chat-voice-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.chat-voice-btn:active:not(:disabled) {
    transform: scale(0.95);
}

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

.chat-voice-btn.listening {
    background: linear-gradient(135deg, #f44336 0%, #d32f2f 100%);
    animation: pulse 1s infinite;
}

/* ================================================
   QUICK REPLIES (Sugestões)
   ================================================ */
.quick-replies {
    padding: 0 var(--spacing-lg) var(--spacing-md);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    max-height: 120px;
    overflow-y: auto;
    scrollbar-width: thin;
}

.quick-replies::-webkit-scrollbar {
    width: 4px;
}

.quick-replies::-webkit-scrollbar-track {
    background: transparent;
}

.quick-replies::-webkit-scrollbar-thumb {
    background: var(--color-primary-light);
    border-radius: var(--radius-full);
}

.quick-replies::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

.quick-reply-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border: 2px solid var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition-fast);
    margin: 4px;
}

.quick-reply-btn:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

/* ================================================
   UTILITIES
   ================================================ */
.hidden {
    display: none !important;
}

/* Glassmorphism reaproveitável — usar em navbar, modais e cards de destaque.
   Evitar em listas longas/tabelas (custo de repaint) e sobre fundos muito
   poluídos (perde legibilidade). */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-glass);
}

.glass-dark {
    background: var(--glass-bg-dark);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-glass);
}

@supports not (backdrop-filter: blur(1px)) {
    .glass {
        background: rgba(255, 255, 255, 0.92);
    }
    .glass-dark {
        background: rgba(33, 33, 33, 0.92);
    }
}

.fade-in {
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Loading spinner */
.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ================================================
   RESPONSIVIDADE
   ================================================ */
@media (max-width: 768px) {
    .chat-input-container {
        padding: var(--spacing-md) var(--spacing-lg);
        gap: var(--spacing-xs);
    }

    .chat-input {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.875rem;
        max-height: 100px;
    }

    .chat-send-btn {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .chat-window {
        width: 100vw;
        height: 100dvh;
        border-radius: 0;
    }

    .message {
        max-width: 90%;
    }

    .chat-header {
        padding: var(--spacing-md);
        flex-shrink: 0;
    }

    .chat-messages {
        padding: var(--spacing-md);
        flex: 1;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .chat-input-container {
        padding: var(--spacing-md);
        gap: var(--spacing-xs);
        flex-shrink: 0;
        background: var(--color-bg-light);
    }

    .chat-input {
        padding: var(--spacing-sm);
        font-size: 0.875rem;
        max-height: 80px;
    }

    .chat-send-btn {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }

    .chat-welcome-screen {
        padding: var(--spacing-lg) var(--spacing-md) !important;
    }

    .quick-replies {
        gap: var(--spacing-sm);
        padding: var(--spacing-md);
    }

    .quick-reply-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.8125rem;
    }
}

/* Botões de início de atendimento */
.btn-start-text,
.btn-start-voice {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-start-text:hover,
.btn-start-voice:hover {
    background: var(--color-primary) !important;
    color: white !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 157, 0.4);
}

.btn-start-text:active,
.btn-start-voice:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(255, 107, 157, 0.3);
}

/* Botão de alternar modo (voz/texto) */
.chat-mode-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.35) !important;
    transform: scale(1.05);
}

.chat-mode-toggle-btn:active {
    transform: scale(0.95);
}

/* Em mobile, garante que input container fique acima de tudo */
@media (max-width: 480px) {
    .chat-input-container {
        position: relative;
        z-index: 100 !important;
    }

    .chat-voice-btn,
    .chat-send-btn {
        z-index: 101 !important;
        position: relative;
    }

    /* Garante que FAB não sobreponha nada quando chat está aberto */
    .chat-window.active ~ .chat-fab.landing-fab {
        display: none !important;
        opacity: 0 !important;
        visibility: hidden !important;
    }
}

/* Dark mode support — escopado só ao widget de chat (.chat-container).
   Antes isso redefinia o :root global, o que também afetava o site
   principal (index.html): lá os fundos das seções são cores fixas
   (branco/pastel), não a variável --color-bg, então o texto ficava
   cinza-claro (pensado p/ fundo escuro) sobre fundo branco — ilegível. */
@media (prefers-color-scheme: dark) {
    .chat-container {
        --color-bg: #1a1a1a;
        --color-bg-light: #2d2d2d;
        --color-bg-dark: #151515;
        --color-text: #e0e0e0;
        --color-text-light: #b0b0b0;
        --color-border: #404040;
        --color-bot-msg: #2d2d2d;
        --color-bot-text: #e0e0e0;
    }
}