:root {
    --primary: #0d6efd;
    --primary-hover: #0b5ed7;
    --success-bg: #d1e7dd;
    --success-border: #badbcc;
    --success-text: #0f5132;
    --warning-bg: #fff3cd;
    --warning-border: #ffecb5;
    --warning-text: #664d03;
    --danger-bg: #f8d7da;
    --danger-border: #f5c2c7;
    --danger-text: #842029;
    --secondary-bg: #e2e3e5;
    --secondary-border: #d3d6d8;
    --secondary-text: #41464b;
    --border-light: #dee2e6;
    --border: #d0d5dd;
    --text-dark: #212529;
    --text-muted: #6c757d;
    --footer-bg: #212529;
    --footer-text: #adb5bd;
}

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

html {
    height: 100%;
}

body {
    font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-dark);
    background: #ffffff;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===== HEADER ===== */

.site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border-light);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    height: 116px;
}

.header-logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.header-logo img {
    display: block;
    height: 52px;
    width: auto;
    object-fit: contain;
}

/* ===== NAVBAR ===== */

.navbar {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    list-style: none;
    overflow-x: auto;
    scrollbar-width: none;
}

.navbar-nav::-webkit-scrollbar {
    display: none;
}

.navbar-nav a {
    display: block;
    padding: 12px 16px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    white-space: nowrap;
}

.navbar-nav a:hover {
    color: var(--primary);
}

.navbar-nav a.active {
    background: var(--primary);
    color: #ffffff;
}

/* ===== CONTENIDO ===== */

.main-content {
    flex: 1 0 auto;
    display: flex;
    justify-content: center;
    padding: 0 20px;
}

.content-wrapper {
    width: 100%;
    max-width: 960px;
    padding-top: 56px;
    padding-bottom: 64px;
}

.page-title {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 28px;
}

/* ===== CARD ===== */

.card {
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
    padding: 56px 48px;
}

.estado-titulo {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 700;
    color: #111418;
    text-align: center;
    margin-bottom: 36px;
}

/* ===== ALERTAS ===== */

.alert {
    padding: 24px 32px;
    border-radius: 10px;
    border: 1px solid transparent;
    font-size: 1.05rem;
    text-align: center;
}

.alert-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.alert-success {
    background-color: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success-text);
}

.alert-danger {
    background-color: var(--danger-bg);
    border-color: var(--danger-border);
    color: var(--danger-text);
}

.alert-warning {
    background-color: var(--warning-bg);
    border-color: var(--warning-border);
    color: var(--warning-text);
}

.alert-secondary {
    background-color: var(--secondary-bg);
    border-color: var(--secondary-border);
    color: var(--secondary-text);
}

/* ===== SPINNER ===== */

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
    flex: none;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== BOTONES ===== */

.card-footer-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-top: 40px;
}

.btn {
    display: inline-block;
    padding: 10px 24px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

/* ===== FOOTER ===== */

.site-footer {
    flex: 0 0 auto;
    background: var(--footer-bg);
    color: var(--footer-text);
    font-size: 0.9rem;
    text-align: center;
    padding: 20px 16px;
    margin-top: auto;
}

/* ===== RESPONSIVE ===== */

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        justify-content: center;
        height: auto;
        padding: 20px 16px;
        gap: 12px;
    }

    .header-logo img {
        height: 40px;
    }

    .navbar-nav {
        padding: 0 8px;
    }

    .content-wrapper {
        padding-top: 36px;
        padding-bottom: 40px;
    }

    .card {
        padding: 36px 20px;
    }

    .estado-titulo {
        margin-bottom: 28px;
    }

    .alert {
        padding: 18px 16px;
        font-size: 1rem;
    }

    .card-footer-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

/* ===== IMPRESIÓN ===== */

@media print {
    .site-header,
    .navbar,
    .card-footer-actions,
    .site-footer {
        display: none;
    }

    .main-content {
        padding: 0;
    }

    .content-wrapper {
        padding: 0;
    }

    .card {
        border: none;
        box-shadow: none;
        padding: 24px;
    }
}