/**
 * Panel Shell — diseño unificado legacy + unified
 * Glassmorphism, sidebar, tipografía moderna
 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --xz-primary: #6366f1;
    --xz-primary-dark: #4f46e5;
    --xz-accent: #ec4899;
    --xz-accent-soft: #f472b6;
    --xz-success: #10b981;
    --xz-warning: #f59e0b;
    --xz-danger: #ef4444;
    --xz-info: #06b6d4;
    --xz-bg: #0f172a;
    --xz-bg-elevated: #1e293b;
    --xz-surface: rgba(255, 255, 255, 0.92);
    --xz-surface-solid: #ffffff;
    --xz-border: rgba(148, 163, 184, 0.25);
    --xz-text: #0f172a;
    --xz-text-muted: #64748b;
    --xz-sidebar-w: 260px;
    --xz-radius: 16px;
    --xz-radius-sm: 10px;
    --xz-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
    --xz-shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.15);
    --xz-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --xz-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Legacy brand override */
.panel-shell--legacy {
    --xz-primary: #e11d8f;
    --xz-primary-dark: #be185d;
    --xz-accent: #f472b6;
}

*, *::before, *::after { box-sizing: border-box; }

body.panel-shell {
    margin: 0;
    font-family: var(--xz-font);
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 40%, #312e81 100%);
    min-height: 100vh;
    color: var(--xz-text);
    -webkit-font-smoothing: antialiased;
}

.panel-shell__layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.panel-shell__sidebar {
    width: var(--xz-sidebar-w);
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--xz-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 1000;
    transition: transform var(--xz-transition);
}

.panel-shell__brand {
    padding: 24px 20px;
    border-bottom: 1px solid var(--xz-border);
}

.panel-shell__brand-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: #fff;
}

.panel-shell__brand-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--xz-primary), var(--xz-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}

.panel-shell__brand-text {
    font-weight: 700;
    font-size: 15px;
    line-height: 1.2;
}

.panel-shell__brand-sub {
    font-size: 11px;
    color: #94a3b8;
    font-weight: 500;
}

.panel-shell__nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.panel-shell__nav-section {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: #64748b;
    padding: 8px 12px 6px;
    font-weight: 600;
}

.panel-shell__nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: var(--xz-radius-sm);
    color: #cbd5e1;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--xz-transition);
    margin-bottom: 2px;
}

.panel-shell__nav-link i {
    width: 20px;
    text-align: center;
    font-size: 15px;
    opacity: 0.85;
}

.panel-shell__nav-link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.panel-shell__nav-link--active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.25), rgba(236, 72, 153, 0.15));
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.3);
}

.panel-shell--legacy .panel-shell__nav-link--active {
    background: linear-gradient(135deg, rgba(225, 29, 143, 0.25), rgba(244, 114, 182, 0.15));
    box-shadow: inset 0 0 0 1px rgba(225, 29, 143, 0.3);
}

.panel-shell__footer {
    padding: 16px;
    border-top: 1px solid var(--xz-border);
}

.panel-shell__user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: var(--xz-radius-sm);
    background: rgba(255, 255, 255, 0.05);
}

.panel-shell__avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--xz-primary), var(--xz-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 14px;
}

.panel-shell__user-name {
    font-size: 13px;
    font-weight: 600;
    color: #e2e8f0;
}

.panel-shell__user-role {
    font-size: 11px;
    color: #94a3b8;
}

/* Main content */
.panel-shell__main {
    flex: 1;
    margin-left: var(--xz-sidebar-w);
    padding: 28px 32px;
    min-height: 100vh;
}

.panel-shell__topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.panel-shell__title {
    font-size: 26px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 6px;
    letter-spacing: -0.5px;
}

.panel-shell__subtitle {
    font-size: 14px;
    color: #94a3b8;
    margin: 0;
}

.panel-shell__actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Buttons */
.xz-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--xz-radius-sm);
    font-family: var(--xz-font);
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: var(--xz-transition);
}

.xz-btn--primary {
    background: linear-gradient(135deg, var(--xz-primary), var(--xz-primary-dark));
    color: #fff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.xz-btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.5);
    color: #fff;
}

.xz-btn--ghost {
    background: rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
    border: 1px solid var(--xz-border);
    backdrop-filter: blur(8px);
}

.xz-btn--ghost:hover {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}

.xz-btn--success {
    background: linear-gradient(135deg, var(--xz-success), #059669);
    color: #fff;
}

.xz-btn--sm {
    padding: 7px 14px;
    font-size: 13px;
}

/* Cards */
.xz-card {
    background: var(--xz-surface);
    backdrop-filter: blur(16px);
    border-radius: var(--xz-radius);
    box-shadow: var(--xz-shadow);
    border: 1px solid rgba(255, 255, 255, 0.6);
    overflow: hidden;
}

.xz-card__header {
    padding: 20px 24px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.xz-card__title {
    font-size: 16px;
    font-weight: 700;
    margin: 0;
    color: var(--xz-text);
}

.xz-card__body {
    padding: 24px;
}

/* Stats grid */
.xz-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.xz-stat {
    background: var(--xz-surface);
    border-radius: var(--xz-radius);
    padding: 22px;
    box-shadow: var(--xz-shadow);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: var(--xz-transition);
    position: relative;
    overflow: hidden;
}

.xz-stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--xz-primary), var(--xz-accent));
}

.xz-stat:hover {
    transform: translateY(-4px);
    box-shadow: var(--xz-shadow-lg);
}

.xz-stat__icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 14px;
}

.xz-stat__icon--primary { background: rgba(99, 102, 241, 0.12); color: var(--xz-primary); }
.xz-stat__icon--success { background: rgba(16, 185, 129, 0.12); color: var(--xz-success); }
.xz-stat__icon--warning { background: rgba(245, 158, 11, 0.12); color: var(--xz-warning); }
.xz-stat__icon--danger { background: rgba(239, 68, 68, 0.12); color: var(--xz-danger); }
.xz-stat__icon--info { background: rgba(6, 182, 212, 0.12); color: var(--xz-info); }

.xz-stat__value {
    font-size: 32px;
    font-weight: 800;
    color: var(--xz-text);
    line-height: 1;
    margin-bottom: 6px;
    letter-spacing: -1px;
}

.xz-stat__label {
    font-size: 13px;
    color: var(--xz-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.xz-stat__delta {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
    margin-top: 10px;
    padding: 3px 8px;
    border-radius: 6px;
}

.xz-stat__delta--up { background: rgba(16, 185, 129, 0.12); color: var(--xz-success); }
.xz-stat__delta--down { background: rgba(239, 68, 68, 0.12); color: var(--xz-danger); }

/* Status pill */
.xz-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
}

.xz-status--online {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.xz-status--warning {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.xz-status--offline {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.xz-status__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    animation: xzPulse 2s infinite;
}

@keyframes xzPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Alerts */
.xz-alert {
    padding: 14px 18px;
    border-radius: var(--xz-radius-sm);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-weight: 500;
}

.xz-alert--success { background: rgba(16, 185, 129, 0.12); color: #059669; border: 1px solid rgba(16, 185, 129, 0.25); }
.xz-alert--warning { background: rgba(245, 158, 11, 0.12); color: #d97706; border: 1px solid rgba(245, 158, 11, 0.25); }
.xz-alert--info { background: rgba(6, 182, 212, 0.12); color: #0891b2; border: 1px solid rgba(6, 182, 212, 0.25); }

/* Quick actions */
.xz-quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 14px;
}

.xz-quick {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 16px;
    background: var(--xz-surface);
    border-radius: var(--xz-radius);
    text-decoration: none;
    color: var(--xz-text);
    border: 1px solid #e2e8f0;
    transition: var(--xz-transition);
    text-align: center;
}

.xz-quick:hover {
    transform: translateY(-3px);
    box-shadow: var(--xz-shadow);
    border-color: var(--xz-primary);
    color: var(--xz-primary);
}

.xz-quick__icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--xz-primary);
}

.xz-quick__label {
    font-size: 13px;
    font-weight: 600;
}

/* Login page */
.panel-login {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
    font-family: var(--xz-font);
    padding: 20px;
}

.panel-login__card {
    width: 100%;
    max-width: 420px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.panel-login__logo {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--xz-primary), var(--xz-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    margin-bottom: 20px;
}

.panel-login__title {
    font-size: 24px;
    font-weight: 800;
    margin: 0 0 8px;
    color: var(--xz-text);
}

.panel-login__desc {
    font-size: 14px;
    color: var(--xz-text-muted);
    margin: 0 0 28px;
}

.panel-login .form-control {
    border-radius: var(--xz-radius-sm);
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    font-family: var(--xz-font);
}

.panel-login .form-control:focus {
    border-color: var(--xz-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.panel-login .form-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--xz-text);
}

/* Mobile toggle */
.panel-shell__toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 1001;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid var(--xz-border);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* Chart cards inherit */
.chart-card, .stat-card, .alerts-widget, .quick-action-btn, .dashboard-card {
    background: var(--xz-surface) !important;
    border-radius: var(--xz-radius) !important;
    box-shadow: var(--xz-shadow) !important;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.dashboard-grid { gap: 20px; }

/* Responsive */
@media (max-width: 992px) {
    .panel-shell__sidebar {
        transform: translateX(-100%);
    }

    .panel-shell__sidebar--open {
        transform: translateX(0);
    }

    .panel-shell__main {
        margin-left: 0;
        padding: 20px 16px;
        padding-top: 72px;
    }

    .panel-shell__toggle {
        display: flex;
    }

    .panel-shell__title {
        font-size: 22px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}