/* =======================================================
   1. VARIABLES GLOBALES (Mejorado el contraste)
   ======================================================= */
:root {
    --bg-dark: #0b1120;
    --panel-bg: #1e293b;
    --input-bg: #0f172a; /* Fondo ultra oscuro para que el input destaque */
    --text-main: #f8fafc;
    --text-muted: #cbd5e1; /* Ligeramente más claro para que no se pierda */
    --accent: #3b82f6;
    --accent-hover: #2563eb;
}

/* =======================================================
   2. ESTILOS BASE
   ======================================================= */
body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Outfit', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased; 
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* =======================================================
   3. PANTALLA DE LOGIN (index.php)
   ======================================================= */
.login-card {
    background-color: var(--panel-bg);
    border: 1px solid rgba(255, 255, 255, 0.08); /* Borde un poco más visible */
    border-radius: 1.25rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.logo-img {
    width: 150px; 
    max-width: 100%;
    height: auto;
    margin-bottom: 2.5rem; 
    filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.15));
}

/* =======================================================
   4. NAVEGACIÓN Y CABECERA PREMIUM (header.php)
   ======================================================= */
.navbar-sereno {
    background: rgba(15, 23, 42, 0.95); /* Menos transparente para no mezclar colores */
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.logo-glow {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.5));
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.navbar-brand:hover .logo-glow {
    transform: scale(1.1) rotate(2deg);
}

/* --- Animación del Menú Hamburguesa (Móvil) --- */
.hamburger-icon span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-main);
    margin: 5px 0;
    transition: 0.3s ease;
}

/* --- Enlaces del menú principal --- */
.custom-nav-link {
    color: var(--text-muted) !important;
    border-radius: 50px; 
    padding: 0.6rem 1.2rem !important;
    transition: all 0.3s ease;
    font-weight: 500;
}

.custom-nav-link:hover {
    color: var(--text-main) !important;
    background-color: rgba(255, 255, 255, 0.1); /* Hover más marcado */
}

.custom-nav-link.active {
    color: var(--accent) !important;
    background-color: rgba(59, 130, 246, 0.2); /* Fondo activo más visible */
    box-shadow: inset 0 0 10px rgba(59, 130, 246, 0.2);
}

/* --- Zona de Usuario --- */
.avatar-circle {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.5); /* Sombra acentuada */
}

/* =======================================================
   5. SISTEMA DE BOTONES GLOBALES (Solución al "Camuflaje")
   ======================================================= */
/* Botón Principal (Guardar) */
.btn-primary {
    background-color: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
    transition: all 0.3s ease;
}
.btn-primary:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

/* Botón Eliminar Notas (Rojo) */
.btn-outline-danger {
    background: rgba(239, 68, 68, 0.1); /* Le damos un fondo rojo muy sutil */
    border-color: rgba(239, 68, 68, 0.5);
    color: #fca5a5;
    transition: all 0.3s ease;
}
.btn-outline-danger:hover {
    background-color: #ef4444;
    color: white;
    border-color: #ef4444;
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.4);
}

/* Botón Salir (Premium Circular) */
.btn-logout-pill {
    background: rgba(239, 68, 68, 0.15); /* Opacidad subida para que se vea bien */
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.4);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    text-decoration: none;
}
.btn-logout-pill:hover {
    background: #ef4444;
    color: white;
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.5);
    border-color: #ef4444;
}

/* =======================================================
   6. CAMPOS DE TEXTO (INPUTS)
   ======================================================= */
.form-control.bg-dark {
    background-color: var(--input-bg) !important;
    color: var(--text-main) !important;
    transition: all 0.3s ease;
}

.form-control.bg-dark:focus {
    background-color: #000000 !important; 
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
}

.form-control::placeholder {
    color: #64748b !important; /* Gris azulado claro y elegante */
    opacity: 1 !important; /* Sobrescribimos la transparencia por defecto del navegador */
    font-weight: 300; /* Lo hacemos un poquito más fino para que quede moderno */
}
/* --- Corrección para Inputs Nativos de Fecha y Hora --- */

/* 1. Forzar al navegador a usar su versión oscura para los popups */
input[type="date"],
input[type="time"],
input[type="datetime-local"] {
    color-scheme: dark;
}

/* 2. Forzar el icono del calendario a BLANCO PURO */
input::-webkit-calendar-picker-indicator {
    cursor: pointer;
    /* Inversión total + brillo al doble = Blanco puro */
    filter: invert(1) grayscale(100%) brightness(200%); 
    opacity: 1 !important; /* Nada de transparencias */
    transition: transform 0.2s ease;
}

/* 3. Efecto de "latido" al pasar el ratón para saber que es clicable */
input::-webkit-calendar-picker-indicator:hover {
    transform: scale(1.15);
}

/* =======================================================
   7. TARJETAS Y LISTAS (Módulo de Notas)
   ======================================================= */
.card-sereno {
    background-color: var(--panel-bg);
    border: 1px solid rgba(255, 255, 255, 0.08); /* Borde acentuado */
    border-radius: 1.2rem;
}

/* Efecto hover al pasar por encima de una nota */
.hover-bg-dark {
    transition: background-color 0.2s ease;
}
.hover-bg-dark:hover {
    background-color: rgba(255, 255, 255, 0.05) !important;
}

/* Animación del circulito de completar tarea */
.checkbox-hover {
    display: inline-block;
    transition: all 0.2s ease;
}
.checkbox-hover:hover {
    transform: scale(1.2);
    filter: brightness(1.5);
}

.nota-completada {
    color: #64748b !important; /* Un gris azulado que contrasta perfectamente */
    opacity: 0.85; /* Suficiente para que se vea apagada, pero 100% legible */
    transition: all 0.3s ease;
}

/* =======================================================
   8. UTILIDADES
   ======================================================= */
.code-trace {
    background-color: #000000;
    color: #10b981; 
    padding: 1.5rem;
    border-radius: 0.5rem;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    overflow-x: auto;
    border: 1px solid #334155;
}

.tracking-wider {
    letter-spacing: 2px;
}

/* =======================================================
   9. SISTEMA DE ARCHIVADO Y ACORDEÓN
   ======================================================= */
/* Botón Archivar (Amarillo/Naranja) */
.btn-outline-warning {
    background: rgba(245, 158, 11, 0.1); 
    border-color: rgba(245, 158, 11, 0.4);
    color: #fcd34d;
    transition: all 0.3s ease;
}
.btn-outline-warning:hover {
    background-color: #f59e0b;
    color: white;
    border-color: #f59e0b;
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.4);
}

/* Acordeón Premium para Notas Archivadas */
.accordion-sereno {
    --bs-accordion-bg: transparent;
    --bs-accordion-color: var(--text-main);
    --bs-accordion-border-color: rgba(255, 255, 255, 0.08);
    --bs-accordion-btn-color: var(--text-muted);
    --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23cbd5e1'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    --bs-accordion-btn-icon-transform: rotate(-180deg);
    --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%233b82f6'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.accordion-sereno .accordion-item {
    background-color: var(--panel-bg);
    border-radius: 1.2rem !important;
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.accordion-sereno .accordion-button {
    background-color: transparent;
    box-shadow: none !important;
    font-weight: 500;
}

.accordion-sereno .accordion-button:not(.collapsed) {
    color: var(--accent);
    background-color: rgba(59, 130, 246, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* =======================================================
   10. DASHBOARD (home.php)
   ======================================================= */
/* Transición suave para las tarjetas principales */
.hover-card {
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.hover-card:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 255, 255, 0.02);
    border-color: rgba(59, 130, 246, 0.3) !important;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
}


/* =======================================================
   11. MÓDULO VACACIONES
   ======================================================= */
.countdown-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.countdown-box {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 1rem;
    padding: 1rem;
    min-width: 80px;
    text-align: center;
}

.countdown-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
    line-height: 1;
}

.countdown-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* Barra de progreso animada */
.progress-sereno {
    height: 12px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 50px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.progress-bar-glow {
    background: linear-gradient(90deg, #3b82f6, #60a5fa);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
}