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

body {
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-family: var(--font-body);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

#particles {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.main-content { flex: 1; position: relative; z-index: 1; }

/* ── Sidebar layout ── */

.app-layout {
    display: flex;
    flex: 1;
    position: relative;
    z-index: 1;
}

.sidebar {
    width: 240px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: var(--border-glass);
    padding: 20px 12px;
    position: sticky;
    top: var(--nav-height);
    height: calc(100vh - var(--nav-height));
    overflow-y: auto;
    z-index: 50;
}

.sidebar-user {
    padding: 0 6px 16px;
    border-bottom: 1px solid var(--border-faint);
    margin-bottom: 8px;
}

.sidebar-user h2 {
    font-size: var(--font-base);
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 2px;
}

.sidebar-user .sub {
    font-size: var(--font-xs);
    color: var(--text-label);
    margin-bottom: 10px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.sidebar-link {
    display: block;
    padding: 9px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.sidebar-link:hover {
    background: var(--bg-accent-subtle);
    color: var(--text-primary);
}

.sidebar-link.active {
    background: var(--bg-accent-mid);
    color: var(--accent-light);
    font-weight: 600;
}

.sidebar-footer {
    padding-top: 12px;
    border-top: 1px solid var(--border-faint);
    margin-top: auto;
}

.sidebar-footer .sidebar-link {
    color: var(--text-faint);
    font-size: 12px;
}

.sidebar-footer .sidebar-link:hover {
    color: var(--accent-light);
    background: rgba(204, 0, 0, 0.06);
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--selection-bg); }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
    0%, 100% { box-shadow: var(--shadow-glow); }
    50%      { box-shadow: var(--shadow-glow-strong); }
}

.anim-fade { animation: fadeUp 0.6s ease-out forwards; opacity: 0; }
.anim-fade-d1 { animation-delay: 0.05s; }
.anim-fade-d2 { animation-delay: 0.1s; }
.anim-fade-d3 { animation-delay: 0.15s; }
.anim-fade-d4 { animation-delay: 0.2s; }
.anim-fade-d5 { animation-delay: 0.25s; }
.anim-fade-d6 { animation-delay: 0.3s; }
.anim-fade-d7 { animation-delay: 0.35s; }
.anim-fade-d8 { animation-delay: 0.4s; }

/* ── Navigation ── */

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px var(--spacing-page);
    border-bottom: var(--border-glass);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-logo {
    font-size: var(--font-lg);
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: 0.5px;
}

.nav-logo span { color: var(--accent-light); }

.nav-links {
    display: flex;
    gap: var(--gap-links);
    font-size: 13px;
    font-weight: 500;
}

.nav-links a {
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition-normal);
}

.nav-links a:hover { color: var(--text-white); }
.nav-links a:hover::after { width: 100%; }

.nav-links a.active,
.nav-link.active {
    color: var(--text-white);
}

.nav-link.active::after {
    width: 100%;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-login-btn {
    padding: 8px 20px !important;
    font-size: 12px !important;
    font-weight: 600 !important;
    width: auto !important;
    display: inline-block !important;
    text-decoration: none !important;
}

/* ── Page wrap / sections ── */

.page-wrap {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 60px var(--spacing-page);
}

.glass-card {
    border-radius: var(--radius-card);
    padding: var(--spacing-card);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--border-glass);
}

.section-label {
    font-size: var(--font-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--accent-light);
    margin-bottom: var(--spacing-xs);
}

.section-title {
    font-size: var(--font-section);
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.3px;
}

.section-desc {
    font-size: var(--font-base);
    color: var(--text-muted);
    max-width: 520px;
    line-height: 1.7;
}

.dashboard {
    display: block;
    max-width: var(--content-max);
}

/* ── Layout media queries ── */

@media (max-width: 900px) {
    .page-wrap { padding: 30px 20px; }
}

@media (max-width: 768px) {
    .sidebar {
        width: 220px;
        padding: 12px 10px;
    }

    .nav-links {
        gap: var(--spacing-sm);
        font-size: 12px;
    }
}

@media (max-width: 600px) {
    .nav { padding: 12px 20px; }
    .nav-links { gap: var(--spacing-md); font-size: var(--font-sm); }
    .auth-card { padding: var(--spacing-lg); }
}