/* Calma IA - Hoja de Estilos Premium (Rediseño Estilo ChatGPT/SaaS) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --color-primary: #0F172A;      /* Azul profundo texto */
    --color-secondary: #64748B;    /* Gris azulado */
    --color-text-dark: #1E293B;    /* Gris oscuro cuerpo */
    --color-bg-app: #F8FAFC;       /* Gris claro fondo app */
    --color-bg-sidebar: #FFFFFF;   /* Fondo blanco sidebar */
    --color-border: rgba(15, 23, 42, 0.05); /* Borde sutil */
    
    --color-blue-ia: #2563EB;      /* Azul IA */
    --color-blue-light: #E0F2FE;   /* Azul suave */
    --color-accent: #A7F3D0;       /* Verde menta */
    --color-white: #FFFFFF;
    
    --color-danger: #EF4444;       /* Rojo alertas */
    --color-danger-light: #FEE2E2;
    --color-success: #10B981;
    --color-success-light: #D1FAE5;
    
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.03), 0 2px 4px -2px rgba(15, 23, 42, 0.02);
    --shadow-premium: 0 10px 30px -10px rgba(15, 23, 42, 0.06);
    
    --transition-fast: all 180ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
    
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    
    --sidebar-width: 260px;
}

/* Reset y estructura global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--color-bg-app);
    color: var(--color-text-dark);
    line-height: 1.625;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Layout flexible para app autenticada */
body.app-layout {
    display: flex;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

a {
    color: var(--color-blue-ia);
    text-decoration: none;
    transition: var(--transition-fast);
}

/* SISTEMA DE CASILLAS Y GRIDS */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
}

/* BOTONES */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--color-blue-ia);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-primary);
    border-color: rgba(15, 23, 42, 0.08);
}

.btn-secondary:hover {
    background-color: var(--color-bg-app);
    border-color: rgba(15, 23, 42, 0.15);
}

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

.btn-dark:hover {
    background-color: #1e293b;
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    border-radius: var(--border-radius-sm);
}

.btn-full {
    width: 100%;
}

.mt-4 {
    margin-top: 1rem;
}

/* FORMULARIOS */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 0.95rem;
    background-color: var(--color-white);
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: var(--border-radius-md);
    outline: none;
    color: var(--color-text-dark);
    transition: var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-blue-ia);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
}

textarea.form-control {
    resize: vertical;
}

/* ALERTAS */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.alert-success {
    background-color: var(--color-success-light);
    color: #065f46;
    border: 1px solid rgba(16, 185, 129, 0.15);
}

.alert-error {
    background-color: var(--color-danger-light);
    color: #991b1b;
    border: 1px solid rgba(239, 68, 68, 0.15);
}

/* ESTRUCTURA DEL SIDEBAR IZQUIERDA */
.app-sidebar {
    width: var(--sidebar-width);
    height: 100%;
    background-color: var(--color-bg-sidebar);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-brand {
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: -0.03em;
}

.sidebar-logo-dot {
    width: 10px;
    height: 10px;
    background-color: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-accent);
}

.btn-new-chat {
    margin: 1.25rem 1rem 0.5rem 1rem;
    padding: 0.7rem 1rem;
    background-color: var(--color-bg-app);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-new-chat:hover {
    border-color: rgba(15, 23, 42, 0.15);
    background-color: #f1f3f5;
}

.sidebar-conversations {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 0.5rem;
}

.sidebar-section-title {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 0.75rem;
}

.sidebar-chat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0.75rem;
    border-radius: var(--border-radius-sm);
    color: var(--color-text-dark);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.15rem;
    transition: var(--transition-fast);
}

.sidebar-chat-item:hover {
    background-color: rgba(15, 23, 42, 0.03);
}

.sidebar-chat-item.active {
    background-color: var(--color-bg-app);
    color: var(--color-blue-ia);
    font-weight: 600;
}

.sidebar-chat-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: inherit;
}

.btn-sidebar-delete {
    background: none;
    border: none;
    color: var(--color-danger);
    opacity: 0;
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0.1rem;
    transition: var(--transition-fast);
}

.sidebar-chat-item:hover .btn-sidebar-delete {
    opacity: 0.5;
}

.sidebar-chat-item:hover .btn-sidebar-delete:hover {
    opacity: 1;
}

.sidebar-footer {
    padding: 0.75rem 0.5rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.65rem 0.75rem;
    border-radius: var(--border-radius-sm);
    color: var(--color-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.sidebar-nav-item:hover {
    background-color: rgba(15, 23, 42, 0.03);
    color: var(--color-primary);
}

.sidebar-nav-item.active {
    background-color: var(--color-bg-app);
    color: var(--color-blue-ia);
    font-weight: 600;
}

.sidebar-nav-item.emergency {
    color: var(--color-danger);
    font-weight: 600;
}

.sidebar-nav-item.emergency:hover {
    background-color: var(--color-danger-light);
    color: var(--color-danger);
}

/* ÁREA DERECHA Y HEADER */
.main-content-panel {
    flex: 1;
    min-width: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    background-color: var(--color-white);
}

.app-header {
    height: 56px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    background-color: var(--color-white);
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    display: none;
    color: var(--color-primary);
}

.app-header-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
}

/* CHAT CONTENEDOR Y BURBUJAS PLANAS */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background-color: var(--color-white);
}

.chat-message-feed {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    scroll-behavior: smooth;
}

.message-row {
    width: 100%;
    border-bottom: 1px solid rgba(15, 23, 42, 0.02);
    padding: 1.5rem 0;
    animation: fadeIn 200ms ease-out forwards;
}

.message-row.user {
    background-color: var(--color-white);
}

.message-row.ai {
    background-color: var(--color-bg-app);
}

.message-row-content {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    gap: 1.5rem;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.message-row.user .message-avatar {
    background-color: var(--color-bg-app);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

.message-row.ai .message-avatar {
    background-color: var(--color-blue-ia);
    color: var(--color-white);
}

.message-text {
    flex: 1;
    font-size: 0.975rem;
    line-height: 1.65;
    color: var(--color-text-dark);
}

.message-row.crisis-row {
    background-color: var(--color-danger-light);
}

.message-row.crisis-row .message-avatar {
    background-color: var(--color-danger);
    color: var(--color-white);
}

.chat-footer-area {
    padding: 1.5rem 2rem 2rem 2rem;
    background-color: var(--color-white);
    flex-shrink: 0;
}

.chat-input-wrapper {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.chat-pill-form {
    display: flex;
    align-items: center;
    background-color: var(--color-white);
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 28px;
    padding: 0.35rem 0.5rem 0.35rem 1.5rem;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.02);
}

.chat-pill-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: 0.95rem;
    padding: 0.6rem 0;
    color: var(--color-text-dark);
}

.chat-pill-send {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.chat-pill-send:hover {
    background-color: var(--color-blue-ia);
}

.chat-welcome-box {
    max-width: 700px;
    margin: auto auto;
    padding: 2rem;
    text-align: center;
}

.chat-welcome-title {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.chat-welcome-subtitle {
    color: var(--color-secondary);
    font-size: 1.05rem;
    margin-bottom: 2.5rem;
}

.welcome-suggestions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    text-align: left;
}

.suggestion-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 1.15rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.suggestion-card:hover {
    background-color: var(--color-bg-app);
    border-color: rgba(15, 23, 42, 0.12);
}

.suggestion-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.suggestion-desc {
    font-size: 0.8rem;
    color: var(--color-secondary);
    line-height: 1.4;
}

.chat-modes-pills {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    white-space: nowrap;
    padding: 0.25rem 0;
}

.chat-modes-pills::-webkit-scrollbar {
    display: none;
}

.chat-pill-item {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    background-color: var(--color-white);
    border: 1px solid rgba(15, 23, 42, 0.08);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-secondary);
    cursor: pointer;
}

.chat-pill-item:hover {
    border-color: rgba(15, 23, 42, 0.2);
    color: var(--color-primary);
}

.chat-pill-item.active {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

/* CONTENEDOR DE VISTAS SECUNDARIAS */
.main-content-scrollable {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    background-color: var(--color-bg-app);
    display: flex;
    flex-direction: column;
    width: 100%;
    /* scroll suave */
    scroll-behavior: smooth;
}

.app-view-container {
    max-width: 960px;
    width: 100%;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 4rem 1.5rem;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.app-view-header {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.app-view-title h1 {
    font-size: 2rem;
    letter-spacing: -0.03em;
}

.app-view-title p {
    color: var(--color-secondary);
    font-size: 0.95rem;
    margin-top: 0.25rem;
}

.view-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
}

/* DIARIO EMOCIONAL ELEMENTOS */
.journal-item {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-fast);
}

.journal-item:hover {
    border-color: rgba(15, 23, 42, 0.1);
    box-shadow: var(--shadow-md);
}

.journal-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    font-size: 0.8rem;
    color: var(--color-secondary);
    font-weight: 500;
}

.emotion-badge {
    border-radius: 50px;
    padding: 0.35rem 0.85rem;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: capitalize;
}

.emotion-calmado { background-color: #D1FAE5; color: #065f46; }
.emotion-alegre { background-color: #FEF3C7; color: #92400e; }
.emotion-ansioso { background-color: #DBEAFE; color: #1e40af; }
.emotion-triste { background-color: #E0F2FE; color: #075985; }
.emotion-enojado { background-color: #FEE2E2; color: #991b1b; }
.emotion-abrumado { background-color: #F3E8FF; color: #6b21a8; }

.intensity-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    background-color: var(--color-bg-app);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

.journal-section-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-secondary);
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.journal-actions {
    display: flex;
    gap: 0.75rem;
    border-top: 1px solid var(--color-border);
    padding-top: 1rem;
    margin-top: 0.5rem;
}

/* GRID SELECCIÓN EMOCIONES */
.emotion-grid-saas {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.75rem;
}

.emotion-card-option {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 1.25rem 0.5rem;
    text-align: center;
    cursor: pointer;
    background-color: var(--color-white);
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.emotion-card-option:hover {
    border-color: rgba(15, 23, 42, 0.12);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.emotion-card-option.selected {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.emotion-card-option.selected[data-value="calmado"] {
    border-color: #10B981;
    background-color: #D1FAE5;
}
.emotion-card-option.selected[data-value="alegre"] {
    border-color: #F59E0B;
    background-color: #FEF3C7;
}
.emotion-card-option.selected[data-value="ansioso"] {
    border-color: #3B82F6;
    background-color: #DBEAFE;
}
.emotion-card-option.selected[data-value="triste"] {
    border-color: #0EA5E9;
    background-color: #E0F2FE;
}
.emotion-card-option.selected[data-value="enojado"] {
    border-color: #EF4444;
    background-color: #FEE2E2;
}
.emotion-card-option.selected[data-value="abrumado"] {
    border-color: #8B5CF6;
    background-color: #F3E8FF;
}

.emotion-option-emoji {
    font-size: 1.6rem;
}

.emotion-option-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* BIBLIOTECA EJERCICIOS */
.exercise-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: var(--transition-fast);
}

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

.exercise-img {
    display: flex;
    align-items: center;
    justify-content: center;
}

.exercise-icon-wrapper {
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.05));
}

/* REPRODUCTOR EJERCICIOS */
.exercise-progress-bar {
    border-radius: 4px;
    overflow: hidden;
}

/* PÁGINA PÚBLICA (LANDING) */
.landing-body {
    background-color: var(--color-bg-app);
}

.landing-hero {
    max-width: 800px;
    margin: 6rem auto 6rem auto;
    text-align: center;
    padding: 0 1.5rem;
}

.landing-hero h1 {
    font-size: 3.5rem;
    line-height: 1.15;
    letter-spacing: -0.04em;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.landing-hero p {
    font-size: 1.25rem;
    color: var(--color-secondary);
    line-height: 1.6;
    margin-bottom: 3rem;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.landing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto 7rem auto;
    padding: 0 1.5rem;
}

.landing-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.landing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-premium);
}

/* AUTENTICACIÓN (LOGIN / REGISTRO) */
.auth-container {
    max-width: 480px;
    margin: 4rem auto;
    padding: 0 1.5rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header p {
    color: var(--color-secondary);
    font-size: 0.95rem;
    margin-top: 0.25rem;
}

.auth-footer {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-secondary);
}

/* PANEL ADMIN VISTAS */
.admin-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.admin-stat-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.admin-stat-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-secondary);
    letter-spacing: 0.05em;
}

.admin-stat-value {
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--color-primary);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.admin-table th {
    padding: 0.75rem 1rem;
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--color-secondary);
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--color-border);
}

.admin-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-dark);
}

.admin-table tr:last-child td {
    border-bottom: none;
}

/* INDICADOR ESCRITURA IA */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0.4rem 0;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background-color: var(--color-secondary);
    border-radius: 50%;
    opacity: 0.5;
    animation: typingAnimation 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingAnimation {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Overlay móvil */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.4);
    z-index: 90;
    display: none;
    backdrop-filter: blur(4px);
}

/* RESPONSIVIDAD PARA EL LAYOUT SaaS */
@media (max-width: 992px) {
    .btn-sidebar-toggle {
        display: block;
    }
    
    .app-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
        box-shadow: var(--shadow-md);
    }
    
    body.sidebar-open .app-sidebar {
        transform: translateX(0);
    }
    
    body.sidebar-open .sidebar-overlay {
        display: block;
    }
    
    .welcome-suggestions-grid {
        grid-template-columns: 1fr;
    }
    
    .emotion-grid-saas {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .admin-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .landing-hero h1 {
        font-size: 2.5rem;
    }
    .landing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .chat-footer-area {
        padding: 1rem 1.25rem;
    }
    .message-row-content {
        padding: 0 1rem;
        gap: 1rem;
    }
    .app-view-container {
        padding: 1.5rem 1rem;
    }
    .emotion-grid-saas {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .admin-stats-grid {
        grid-template-columns: 1fr;
    }
}