:root {
    --zest-navy: #0f172a;
    --zest-slate: #334155;
    --zest-ink: #162033;
    --zest-blue: #1d4ed8;
    --zest-blue-strong: #1e40af;
    --zest-cyan: #0ea5e9;
    --zest-sky: #e0f2fe;
    --zest-cream: #f8fafc;
    --zest-white: #ffffff;
    --zest-line: #dbe4f0;
    --zest-success: #15803d;
    --zest-warning: #c2410c;
    --zest-shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
    --zest-shadow-soft: 0 8px 24px rgba(15, 23, 42, 0.06);
    --zest-radius: 24px;
}

body {
    color: var(--zest-ink);
}

.zest-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--zest-navy);
    text-decoration: none;
}

.zest-brand-mark {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.95rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #1d4ed8 0%, #0ea5e9 100%);
    box-shadow: 0 12px 24px rgba(29, 78, 216, 0.18);
}

.zest-brand-mark img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.zest-brand-mark i {
    display: inline-block;
    color: #ffffff;
    font-size: 1.1rem;
}

.zest-brand-mark img + i {
    display: none;
}

.zest-brand-mark::before {
    content: '';
}

.zest-brand-word {
    display: inline-flex;
    align-items: baseline;
    gap: 0.18rem;
    font-size: 1.1rem;
}

.zest-brand-word strong,
.zest-brand-word span {
    font-weight: 800;
}

.zest-brand-word span {
    color: var(--zest-blue);
}

.zest-shell {
    background:
        radial-gradient(circle at top left, rgba(14, 165, 233, 0.08), transparent 28%),
        linear-gradient(180deg, #f8fbff 0%, #f3f6fb 100%);
}

.zest-navbar {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(219, 228, 240, 0.85);
}

.zest-navbar .nav-link {
    color: var(--zest-slate) !important;
    font-weight: 600;
    border-radius: 999px;
    padding: 0.7rem 1rem !important;
    margin: 0 0.18rem;
}

.zest-navbar .nav-link:hover,
.zest-navbar .nav-link.active {
    color: var(--zest-blue) !important;
    background: rgba(29, 78, 216, 0.08);
}

.zest-navbar .btn-outline-primary {
    border-width: 1px;
    border-color: rgba(29, 78, 216, 0.18);
    color: var(--zest-blue);
    background: rgba(29, 78, 216, 0.04);
    border-radius: 999px;
    font-weight: 700;
}

.zest-navbar .btn-outline-primary:hover {
    background: var(--zest-blue);
    border-color: var(--zest-blue);
}

.zest-footer {
    background:
        radial-gradient(circle at top, rgba(14, 165, 233, 0.15), transparent 28%),
        linear-gradient(180deg, #0b1324 0%, #08101e 100%);
    color: #c3d2e8;
}

.zest-footer .footer-logo {
    color: var(--zest-white);
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: -0.04em;
}

.zest-footer a {
    color: #c3d2e8;
}

.zest-footer a:hover {
    color: var(--zest-success);
}

.zest-panel {
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(219, 228, 240, 0.9);
    box-shadow: var(--zest-shadow-soft);
    border-radius: var(--zest-radius);
}

@media (max-width: 991.98px) {
    .zest-navbar .navbar-collapse {
        background: var(--zest-white);
        border: 1px solid var(--zest-line);
        box-shadow: var(--zest-shadow-soft);
        border-radius: 1.25rem;
        margin-top: 0.9rem;
        padding: 1rem;
    }
}