:root {
    --primary: #3b82f6;
    --primary-dark: #1d4ed8;
    --bg-color: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

body.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Fondo decorativo */
.background-blobs {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 40%);
    z-index: -1;
}

/* Header & Nav */
.main-header {
    background: var(--card-bg);
    padding: 1.5rem 2rem;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.logo-container h1 {
    font-size: 1.5rem;
    color: var(--primary-dark);
    text-align: center;
}

.domain {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
    text-align: center;
}

.tabs {
    display: flex;
    background: #f1f5f9;
    padding: 0.4rem;
    border-radius: 12px;
}

.tab-btn {
    padding: 0.6rem 1.5rem;
    border: none;
    background: transparent;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-muted);
    transition: 0.3s;
    border-radius: 8px;
}

.tab-btn.active {
    background: var(--card-bg);
    color: var(--primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Layout */
.container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05);
}

h2 { margin-bottom: 0.5rem; font-size: 1.25rem; }
.subtitle { color: var(--text-muted); margin-bottom: 2rem; font-size: 0.9rem; }

/* Form Grid */
.filter-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.col-span-full {
    grid-column: 1 / -1;
}

.hidden {
    display: none !important;
}


.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
}

.input-group.required label::after {
    content: " *";
    color: #ef4444;
}

input[type="text"], input[type="password"], input[type="date"], select {
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.9rem;
    transition: 0.3s;
    width: 100%;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Checkbox */
.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
}


.btn-primary {
    grid-column: 1 / -1;
    background: var(--primary);
    color: white;
    padding: 1rem;
    border: none;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: 0.3s;
    font-size: 1rem;
    margin-top: 1rem;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Tablas */
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.5s; }

.table-container { overflow-x: auto; margin-top: 1rem; }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th {
    text-align: left;
    padding: 1rem;
    background: #f8fafc;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.btn-download {
    background: #eff6ff;
    color: var(--primary);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
}

/* Mobile Adjustments */
@media (max-width: 600px) {
    .main-header { padding: 1rem; }
    .filter-grid { grid-template-columns: 1fr; }
    .card { padding: 1.5rem; }
    .tab-btn { padding: 0.6rem 0.8rem; font-size: 0.85rem; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Login Specific */
.login-container {
    width: 100%;
    max-width: 450px;
    padding: 1rem;
    z-index: 10;
}

.login-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.login-title {
    text-align: center;
    margin-top: 1rem;
}

.login-card .subtitle {
    text-align: center;
}

.error-message {
    background: #fef2f2;
    color: #b91c1c;
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 0.85rem;
    text-align: center;
    border: 1px solid #fee2e2;
    margin-top: 0.5rem;
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}