:root {
    --brand-primary: #d84747; /* requested red */
    --brand-accent: #fff7dc; /* requested light accent */
    --brand-text: #2a2a2a;
    --brand-bg: #ffffff;
    --brand-muted: #f6f0e2; /* soft background tint */
}
.dark-mode {
    --brand-text: #f3f3f3;
    --brand-bg: #121212;
    --brand-muted: #1b1b1b;
}
body {
    background: var(--brand-bg);
    color: var(--brand-text);
}

/* Navbar */
.navbar {
    background: var(--brand-primary) !important;
}
.navbar .nav-link,
.navbar .navbar-brand {
    color: var(--brand-accent) !important;
    font-weight: 600;
}
.navbar .nav-link.active,
.navbar .nav-link:hover {
    opacity: 0.9;
}

/* Buttons */
.btn-brand {
    background: var(--brand-primary);
    color: var(--brand-accent);
    border: 2px solid var(--brand-accent);
}
.btn-brand:hover {
    filter: brightness(0.95);
}
.btn-accent {
    background: var(--brand-accent);
    color: var(--brand-primary);
    border: 2px solid var(--brand-primary);
}
.btn-outline-brand {
    background: transparent;
    color: var(--brand-primary);
    border: 2px solid var(--brand-primary);
}
.btn-outline-brand:hover {
    background: var(--brand-accent);
}

/* Cards */
.card {
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 1rem;
    box-shadow: 0 10px 24px rgba(216, 71, 71, 0.08);
    background: var(--brand-bg);
    color: var(--brand-text);
}
.dark-mode .card {
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

/* Accent band */
.accent-band {
    background: var(--brand-accent);
    color: var(--brand-primary);
    border-left: 6px solid var(--brand-primary);
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
}

/* Footer */
footer {
    background: var(--brand-muted);
}
.dark-mode footer {
    background: #151515;
}

/* Utility */
.brand-underline {
    position: relative;
    display: inline-block;
}
.brand-underline::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 6px;
    background: var(--brand-accent);
    border-radius: 6px;
}
a {
    color: var(--brand-primary);
}
a:hover {
    opacity: 0.9;
}

/* Active nav helper (for no-JS flicker) */
.nav-link[aria-current="page"] {
    text-decoration: underline;
    text-underline-offset: 6px;
}

/* Accordion: collapsed headers use accent background and primary text */
.accordion-button.collapsed {
    background-color: var(--brand-accent);
    color: var(--brand-primary);
}

/* Subtle hover for collapsed headers */
.accordion-button.collapsed:hover {
    filter: brightness(0.98);
}

/* Accessible focus ring using brand color */
.accordion-button:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 0.25rem rgba(216, 71, 71, 0.25);
}