/* ============================================================
   🎨 VARIABLES DINÁMICAS (PALETA OFICIAL CUCHICHEO DIGITAL)
   ============================================================ */

/* --- ☀️ MODO CLARO (Por defecto, contrastes altos) --- */
:root {
    --bg-main: #f1f5f9;          /* Fondo grisáceo claro */
    --bg-card: #ffffff;          /* Tarjetas blancas puras */
    --text-dark: #0f172a;        /* Texto principal (casi negro) */
    --text-muted: #475569;       /* Texto secundario (gris oscuro) */
    --border: #cbd5e1;           /* Bordes definidos */
    
    /* Colores corporativos extraídos de tu logo */
    --primary: #0082c3;          /* Azul cian de la 'C' */
    --accent: #c11845;           /* Magenta de la 'D' */
    --success: #6bb743;          /* Verde de la hoja */
    
    --danger: #c0392b;
    --warning: #f39c12;
}

/* --- 🌙 MODO OSCURO AUTOMÁTICO (Detecta el sistema del celular) --- */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-main: #0f172a;      /* Fondo azul oscuro profundo */
        --bg-card: #1e293b;      /* Tarjetas gris azulado oscuro */
        --text-dark: #f8fafc;    /* Texto principal blanco puro */
        --text-muted: #94a3b8;   /* Texto secundario gris claro */
        --border: #334155;       /* Bordes oscuros integrados */
        
        /* Brillo adaptado para que resalten sobre lo oscuro */
        --primary: #38bdf8;      /* Azul cian brillante */
        --accent: #f43f5e;       /* Magenta vivo */
        --success: #4ade80;      /* Verde brillante */
    }
    
    /* Sutil resplandor al logo transparente en modo oscuro */
    img[alt="Cuchicheo Digital"] {
        filter: drop-shadow(0px 4px 12px rgba(255,255,255,0.12)) !important;
    }
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-main);
    color: var(--text-dark);
    line-height: 1.5;
    padding: 15px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 500px;
    width: 100%;
    background: var(--bg-card);
    padding: 25px 20px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-top: 5px solid var(--primary);
    transition: background-color 0.3s;
}

/* Cabecera / Logo */
.logo h1 {
    font-size: 24px;
    color: var(--text-dark);
    font-weight: 800;
}

/* Bloque de Autenticación */
.auth-box {
    background: var(--bg-main);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid var(--border);
    margin-bottom: 15px;
}

.field-group {
    margin-bottom: 12px;
}
.field-group:last-of-type {
    margin-bottom: 5px;
}

.field-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.field-group input {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    background: var(--bg-card);
    color: var(--text-dark);
    transition: border-color 0.2s;
}

.field-group input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Caja de previsualización interactiva */
.demo-box {
    font-family: 'Courier New', monospace;
    font-size: 11px;
    padding: 8px 10px;
    border-radius: 6px;
    background: #0f172a;
    color: #4ade80;
    word-break: break-all;
    margin-top: 5px;
    border: 1px solid var(--border);
}
.demo-box.vacio {
    background: var(--bg-main);
    color: var(--text-muted);
    font-family: inherit;
}

.error-msg {
    color: var(--danger);
    font-size: 12px;
    margin-top: 4px;
    display: none;
}
.error-msg.show { display: block; }

/* Filter Anti-Bot (Capa 2) */
.bot-filter {
    background: var(--bg-main) !important;
    color: var(--text-dark) !important;
    border: 1px solid var(--border) !important;
}

/* ============================================================
   SISTEMA DE PESTAÑAS (TABS)
   ============================================================ */
.tabs-nav {
    display: flex;
    gap: 5px;
    margin-bottom: 15px;
    background: var(--bg-main);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.tab-btn {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
}

.tab-btn.active {
    background: var(--bg-card);
    color: var(--primary);
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ============================================================
   ELEMENTOS DE CONTENIDO
   ============================================================ */
.action-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    min-height: 90px;
    resize: vertical;
    font-family: inherit;
    background: var(--bg-card);
    color: var(--text-dark);
    margin-bottom: 12px;
}

.overwrite-notice {
    background: #fff8e7;
    border-radius: 8px;
    padding: 8px 12px;
    margin-bottom: 12px;
    border: 1px solid #f0e0c0;
    font-size: 12px;
    color: #7a6a4a;
}
@media (prefers-color-scheme: dark) {
    .overwrite-notice {
        background: #2c2514;
        border-color: #5c4d28;
        color: #f6e0b3;
    }
}

/* ============================================================
   BOTONES Y ACCIONES
   ============================================================ */
.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    font-family: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.btn:active { transform: scale(0.99); }

.btn-rec { background: var(--primary) !important; color: white !important; }
.btn-guardar { background: var(--accent) !important; color: white !important; }
.btn:hover { filter: brightness(90%); }

.btn-secondary-group {
    display: flex;
    gap: 8px;
    margin-top: 15px;
}
.btn-sub {
    flex: 1;
    background: var(--bg-main);
    color: var(--text-dark);
    border: 1px solid var(--border);
    font-size: 12px;
    padding: 8px;
}

/* Resultados y Sello */
#resultado {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-main);
    border-radius: 8px;
    border-left: 4px solid var(--warning);
    font-size: 14px;
    color: var(--text-dark);
    white-space: pre-wrap;
    word-break: break-word;
    display: none;
}
#resultado.visible { display: block; }

.sello {
    display: none;
    background: var(--bg-main);
    border: 1px solid var(--success);
    border-radius: 8px;
    padding: 10px;
    margin-top: 12px;
    font-size: 13px;
    color: var(--success);
}
.sello.visible { display: block; }

/* Modales e Historial */
.scenario {
    background: var(--bg-main);
    border-left: 3px solid var(--accent);
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 13px;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.footer {
    margin-top: 15px;
    text-align: center;
    font-size: 11px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    padding-top: 10px;
}
.footer a { color: var(--primary); text-decoration: none; font-weight: 600; }

/* Dialog Nativos */
dialog {
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-dark);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    padding: 20px;
    max-width: 400px;
    width: 90%;
    margin: auto;
}
dialog::backdrop {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}
.modal-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}
.modal-body {
    font-size: 13px;
    color: var(--text-dark);
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 15px;
    line-height: 1.6;
}