:root {
    --navy-dark: #001f3f;
    --navy-primary: #003366;
    --navy-light: #004080;
    --accent-blue: #0066cc;
    --bg-light: #f4f7f9;
    --text-dark: #2c3e50;
    --white: #ffffff;
    --border-color: #cbd5e1;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
}

/* Header */
.navbar {
    background-color: var(--navy-dark);
    color: var(--white);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.navbar .logo {
    font-size: 1.1rem;
    font-weight: bold;
}

.navbar nav a {
    color: var(--white);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.9rem;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
}

.main-content {
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

/* Sistema de Pestañas (Tabs) */
.tabs-header {
    display: flex;
    background: #e2e8f0;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--navy-light);
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 3px solid transparent;
}

.tab-btn:hover {
    color: var(--navy-dark);
    background: #cbd5e1;
}

.tab-btn.active {
    background: var(--white);
    color: var(--navy-primary);
    border-bottom: 3px solid var(--navy-primary);
}

.tab-content {
    display: none;
    padding: 2rem;
}

.tab-content.active {
    display: block;
}

/* Elementos del Formulario */
.form-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.form-header h1 {
    font-size: 1.2rem;
    color: var(--navy-primary);
    margin-bottom: 0.3rem;
    text-transform: uppercase;
}

.form-header p {
    font-size: 0.8rem;
    color: #64748b;
}

.section-title {
    color: var(--navy-primary);
    font-size: 0.95rem;
    margin: 1.5rem 0 1rem 0;
    padding-bottom: 0.3rem;
    border-bottom: 2px solid var(--navy-primary);
    font-weight: bold;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--navy-dark);
}

.required { color: #e63946; }

.form-control {
    width: 100%;
    padding: 0.65rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.9rem;
    outline: none;
}

.form-control:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
}

textarea.form-control { resize: vertical; min-height: 80px; }

/* Caja de Info Consulta */
.alert-info-box {
    background-color: #e0f2fe;
    border: 1px solid #bae6fd;
    color: #0369a1;
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.88rem;
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.btn-submit {
    width: 100%;
    padding: 0.85rem;
    background-color: var(--navy-primary);
    color: var(--white);
    border: none;
    border-radius: 4px;
    font-size: 0.95rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-submit:hover { background-color: var(--navy-dark); }

/* Sidebar */
.sidebar-nav { display: flex; flex-direction: column; gap: 0.8rem; }
.sidebar-btn {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--navy-primary);
    padding: 1rem;
    border-radius: 4px;
    text-decoration: none;
    color: var(--navy-dark);
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.2s;
}
.sidebar-btn:hover { background: var(--navy-primary); color: var(--white); transform: translateX(4px); }

.checkbox-group { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; margin-bottom: 0.8rem; }
.legal-notice { font-size: 0.75rem; color: #64748b; margin-top: 1.5rem; background: #f8fafc; padding: 0.8rem; border: 1px solid #e2e8f0; }
.d-none { display: none !important; }

@media (max-width: 900px) {
    .container { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .form-grid-2, .form-grid-3 { grid-template-columns: 1fr; }
    .tabs-header { flex-direction: column; }
    .tab-btn { text-align: left; }
}