:root {
    /* Tu paleta de colores pastel exactos */
    --clr-pink: #FFCFEA;
    --clr-yellow: #FEFFBE;
    --clr-green: #CBFFE6;
    --clr-blue: #AFE9FF;
    --clr-purple: #BFB9FF;
    
    /* Colores estructurales del panel */
    --sidebar-bg: #1A224D;
    --main-bg: #F4F7FE;
    --text-dark: #1B2559;
    --text-muted: #A3AED0;
    --white: #FFFFFF;
    --accent: #4318FF;
    --accent-hover: #3311E0;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--main-bg);
    color: var(--text-dark);
    min-height: 100vh;
}

.dashboard-container {
    display: flex;
    min-height: 100vh;
}

/* ================= MENÚ LATERAL (SIDEBAR) ================= */
.sidebar {
    width: 290px;
    background-color: var(--sidebar-bg);
    color: var(--white);
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100%;
    z-index: 100;
    box-shadow: 4px 0 25px rgba(0, 0, 0, 0.05);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 25px;
}

.logo-icon {
    font-size: 2.2rem;
    color: var(--clr-blue);
    filter: drop-shadow(0 0 8px rgba(175, 233, 255, 0.4));
}

.sidebar-header h2 {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.sidebar-nav a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    padding: 14px 18px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.25s ease;
}

.sidebar-nav a i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

.sidebar-nav a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.08);
}

.sidebar-nav a.active {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.15) 0%, transparent 100%);
    color: var(--white);
    border-left: 4px solid var(--clr-blue);
    padding-left: 14px;
}

/* ================= CONTENIDO PRINCIPAL ================= */
.main-content {
    margin-left: 290px;
    flex: 1;
    padding: 40px;
    max-width: 1300px;
}

.content-header {
    margin-bottom: 35px;
}

.content-header h1 {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.content-header p {
    color: #707EAE;
    font-size: 1.05rem;
}

/* TARJETAS RESUMEN SUPERIORES */
.modules-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
    margin-bottom: 45px;
}

.mini-card {
    background: var(--white);
    padding: 22px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 10px 30px rgba(112, 144, 176, 0.08);
    border: 1px solid rgba(226, 232, 240, 0.6);
}

.mini-card i {
    font-size: 1.6rem;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
}

.mini-card.pink i { background-color: var(--clr-pink); color: #B83280; }
.mini-card.blue i { background-color: var(--clr-blue); color: #2B6CB0; }
.mini-card.purple i { background-color: var(--clr-purple); color: #553C9A; }

.mini-card-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2px;
}

.mini-card-info p {
    font-size: 0.85rem;
    color: #A3AED0;
    font-weight: 700;
}

.section-title {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 25px;
    color: var(--text-dark);
    position: relative;
    padding-bottom: 8px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 4px;
    background-color: var(--accent);
    border-radius: 2px;
}

/* GRID DE TARJETAS DE SIMULADORES */
.simulators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.sim-card {
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 12px 35px rgba(112, 144, 176, 0.1);
    border: 1px solid rgba(226, 232, 240, 0.7);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    flex-direction: column;
}

.sim-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(112, 144, 176, 0.18);
}

.sim-card-header {
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.sim-card-header i {
    font-size: 2.8rem;
    color: rgba(27, 37, 89, 0.35);
}

/* Colores de cabecera usando tu paleta rotada */
.sim-card-header.blue { background-color: var(--clr-blue); }
.sim-card-header.green { background-color: var(--clr-green); }
.sim-card-header.yellow { background-color: var(--clr-yellow); }
.sim-card-header.pink { background-color: var(--clr-pink); }
.sim-card-header.purple { background-color: var(--clr-purple); }

.sim-card-body {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.sim-card-body h3 {
    margin-bottom: 10px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
}

.sim-card-body p {
    color: #707EAE;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 25px;
    flex: 1; /* Empuja el botón siempre hacia abajo de forma uniforme */
}

.btn-open {
    display: block;
    background-color: var(--accent);
    color: var(--white);
    text-decoration: none;
    padding: 12px;
    border-radius: 12px;
    font-weight: bold;
    font-size: 0.95rem;
    text-align: center;
    box-shadow: 0 4px 12px rgba(67, 24, 255, 0.25);
    transition: all 0.25s ease;
}

.btn-open:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 6px 16px rgba(67, 24, 255, 0.4);
    transform: translateY(-1px);
}

/* RESPONSIVE DESIGN */
@media (max-width: 1024px) {
    .sidebar { width: 85px; padding: 25px 10px; }
    .sidebar h2, .sidebar-nav span, .sidebar-header h2 { display: none; }
    .sidebar-nav a { justify-content: center; padding: 15px 0; }
    .main-content { margin-left: 85px; padding: 30px; }
}

@media (max-width: 600px) {
    .dashboard-container { flex-direction: column; }
    .sidebar { width: 100%; height: auto; position: relative; padding: 20px; }
    .sidebar-header h2 { display: block; }
    .sidebar-nav { flex-direction: row; overflow-x: auto; padding-bottom: 10px; }
    .sidebar-nav a { white-space: nowrap; padding: 10px 15px; }
    .main-content { margin-left: 0; padding: 20px; }
}