/* Estilos Globales */
body {
    background-color: #f0f2f5;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    margin: 0;
}

.card {
    border: none;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.card-header {
    border-bottom: none;
    font-weight: 600;
}

.navbar {
    backdrop-filter: blur(10px);
    background-color: rgba(45, 52, 54, 0.95) !important;
}

.nav-link {
    font-weight: 500;
    transition: color 0.2s ease;
}

.admin-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: #f0f2f5;
}

.admin-topbar {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.98) 0%, rgba(31, 41, 55, 0.98) 100%);
    position: sticky;
    top: 0;
    z-index: 1040;
}

.admin-sidebar {
    background: linear-gradient(180deg, #111827 0%, #0b1220 100%);
    width: 270px;
    border-right: 1px solid rgba(255,255,255,0.06);
}

.admin-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 18px 12px;
}

.admin-brand {
    letter-spacing: 0.3px;
}

.admin-sidebar-body {
    padding: 0 14px 14px;
    overflow-y: auto;
}

.admin-user {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 14px;
    padding: 12px 12px;
    margin-bottom: 14px;
}

.admin-user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: rgba(255,255,255,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.admin-user-role {
    opacity: 0.75;
    letter-spacing: 0.6px;
}

.admin-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.admin-nav-link {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    border-radius: 12px;
    text-decoration: none;
    color: rgba(255,255,255,0.86);
    border: 1px solid rgba(255,255,255,0.06);
    background: rgba(255,255,255,0.02);
    transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}

.admin-nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.14);
    transform: translateY(-1px);
}

.admin-nav-link.active {
    color: #fff;
    background: rgba(99, 102, 241, 0.22);
    border-color: rgba(99, 102, 241, 0.38);
}

.admin-sidebar-footer {
    padding: 12px 14px 16px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.admin-content {
    min-width: 0;
}

@media (min-width: 992px) {
    .admin-shell {
        flex-direction: row;
    }
    .admin-sidebar {
        position: sticky;
        top: 0;
        height: 100vh;
        display: flex;
        flex-direction: column;
    }
    .admin-sidebar-body {
        flex: 1 1 auto;
    }
    .admin-sidebar-footer {
        margin-top: auto;
    }
}

/* Estilos específicos para la página de Login */
.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    overflow: hidden;
    max-width: 450px;
    width: 100%;
    transition: transform 0.3s ease;
}

.login-card:hover {
    transform: translateY(-5px);
}

.login-header {
    background: #2d3436;
    color: white;
    padding: 40px 20px;
    text-align: center;
}

.login-header h2 {
    font-weight: 700;
    margin-bottom: 5px;
    letter-spacing: 1px;
}

.login-header p {
    font-size: 0.9rem;
    opacity: 0.8;
}

.login-body {
    padding: 40px;
}

.form-floating > .form-control {
    border-radius: 10px;
    border: 1px solid #dfe6e9;
}

.form-floating > .form-control:focus {
    border-color: #6c5ce7;
    box-shadow: 0 0 0 0.25rem rgba(108, 92, 231, 0.25);
}

.btn-login {
    background: #6c5ce7;
    border: none;
    border-radius: 10px;
    padding: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-login:hover {
    background: #a29bfe;
    transform: scale(1.02);
}

.quick-access-section {
    margin-top: 30px;
    border-top: 1px solid #eee;
    padding-top: 20px;
}

.quick-access-btn {
    border-radius: 8px;
    font-size: 0.85rem;
    padding: 8px;
    transition: all 0.2s ease;
}

.invalid-feedback {
    font-size: 0.8rem;
}