:root {
    --brand-dark: #0f172a;
    --brand-primary: #0284c7;
    --brand-primary-hover: #0369a1;
    --brand-accent: #38bdf8;
    --text-main: #334155;
    --text-muted: #64748b;
}

body {
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--text-main);
    background-color: #f8fafc;
}

/* Top Bar Refinement */
.top-bar {
    background-color: var(--brand-dark);
    font-size: 0.78rem;
    letter-spacing: 0.2px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.top-bar a.social-link {
    color: #94a3b8;
    width: 26px;
    height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
    text-decoration: none;
}
.top-bar a.social-link:hover {
    color: #ffffff;
    background: var(--brand-primary);
    transform: translateY(-2px);
}

/* Sticky Glassmorphism Navbar */
.navbar-custom {
    background-color: rgba(255, 255, 255, 0.92) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: all 0.3s ease;
}

/* Brand Styling */
.brand-logo {
    width: 300px;
    height: 70px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.06));
}
.brand-title {
    font-size: 0.95rem;
    letter-spacing: -0.2px;
    color: var(--brand-dark);
}
.brand-subtitle {
    font-size: 0.65rem;
    letter-spacing: 0.8px;
    color: var(--text-muted);
}

/* Nav Link Pills */
.navbar .nav-link {
    font-size: 0.88rem;
    color: #475569;
    font-weight: 500;
    padding: 7px 16px !important;
    border-radius: 8px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.navbar .nav-link:hover {
    color: var(--brand-primary) !important;
    background-color: #f1f5f9;
}
.navbar .nav-link.active {
    color: var(--brand-primary) !important;
    background-color: #e0f2fe;
    font-weight: 600;
}

/* Buttons Styling */
.btn-spmb {
    background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
    color: #ffffff !important;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: 50px;
    border: none;
    box-shadow: 0 4px 14px rgba(2, 132, 199, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-spmb:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(2, 132, 199, 0.35);
    background: linear-gradient(135deg, #0369a1 0%, #075985 100%);
}

.btn-login {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 7px 18px;
    border-radius: 50px;
    color: #475569;
    border: 1px solid #cbd5e1;
    background-color: #ffffff;
    transition: all 0.2s ease;
    text-decoration: none;
}
.btn-login:hover {
    background-color: #f8fafc;
    color: var(--brand-primary);
    border-color: #94a3b8;
    transform: translateY(-1px);
}

.btn-logout {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 7px 18px;
    border-radius: 50px;
    color: #ef4444;
    border: 1px solid #fca5a5;
    background-color: #fef2f2;
    transition: all 0.2s ease;
    text-decoration: none;
}
.btn-logout:hover {
    background-color: #ef4444;
    color: #ffffff;
    border-color: #ef4444;
    transform: translateY(-1px);
}