/* ==========================================================================
   FreeRouter design system.
   Modeled on the Multify (superclaws) marketing site: monochrome/grayscale,
   sharp corners (border-radius: 0), flat 1px-bordered cards, Krona One display
   font + Instrument Sans body. Light/dark via Bootstrap's data-bs-theme, with a
   system-default fallback (see theme.js). Custom classes are prefixed `fr-`.
   ========================================================================== */

/* ---- Theme tokens -------------------------------------------------------- */
:root,
[data-bs-theme="dark"] {
    --fr-bg: #0f0f0f;
    --fr-card: #1a1a1a;
    --fr-card2: #252525;
    --fr-text: #ffffff;
    --fr-muted: #a0a0a0;
    --fr-accent: #808080;
    --fr-accent-hover: #666666;
    --fr-border: #333333;
    --fr-success: #22c55e;
}

[data-bs-theme="light"] {
    --fr-bg: #ffffff;
    --fr-card: #f7f7f7;
    --fr-card2: #efefef;
    --fr-text: #0f0f0f;
    --fr-muted: #666666;
    --fr-accent: #555555;
    --fr-accent-hover: #333333;
    --fr-border: #e0e0e0;
    --fr-success: #16a34a;
}

/* ---- Base ---------------------------------------------------------------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    background: var(--fr-bg);
    color: var(--fr-text);
    font-family: 'Instrument Sans', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    margin: 0;
}

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

img, video { max-width: 100%; height: auto; }

/* ---- Typography ---------------------------------------------------------- */
.fr-wordmark {
    font-family: 'Krona One', sans-serif;
    font-size: 1.15rem;
    letter-spacing: 0.02em;
    color: var(--fr-text);
}

.fr-heading {
    font-family: 'Krona One', sans-serif;
    line-height: 1.25;
}

.fr-heading-sans {
    font-family: 'Instrument Sans', sans-serif;
    font-weight: 700;
}

.fr-label {
    font-family: 'Instrument Sans', sans-serif;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--fr-muted);
}

.fr-muted { color: var(--fr-muted); }

/* Accent underline for emphasized phrases in headings */
.fr-accent-underline {
    position: relative;
    white-space: nowrap;
}
.fr-accent-underline::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -0.12em;
    height: 3px;
    background: var(--fr-success);
}

/* ---- Buttons ------------------------------------------------------------- */
.btn-fr {
    border-radius: 0;
    font-family: 'Instrument Sans', sans-serif;
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.625rem 1.5rem;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border: 1px solid transparent;
    line-height: 1.4;
    cursor: pointer;
}

.btn-fr-primary {
    background: var(--fr-text);
    color: var(--fr-bg);
    border-color: var(--fr-text);
}
.btn-fr-primary:hover {
    background: var(--fr-accent-hover);
    border-color: var(--fr-accent-hover);
    color: #ffffff;
}

.btn-fr-ghost {
    background: transparent;
    color: var(--fr-muted);
    border-color: var(--fr-border);
}
.btn-fr-ghost:hover { color: var(--fr-text); border-color: var(--fr-accent); }

.btn-fr-lg { font-size: 1rem; padding: 0.875rem 2.25rem; }

/* ---- Theme toggle -------------------------------------------------------- */
.btn-theme {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--fr-border);
    border-radius: 0;
    color: var(--fr-text);
    cursor: pointer;
    transition: border-color 0.2s;
}
.btn-theme:hover { border-color: var(--fr-accent); }

/* ---- Dropdown menu (app user menu) --------------------------------------- */
.dropdown-menu {
    border-radius: 0;
    background: var(--fr-card);
    border: 1px solid var(--fr-border);
    color: var(--fr-text);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    min-width: 12rem;
}
.dropdown-item {
    color: var(--fr-text);
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
}
.dropdown-item:hover,
.dropdown-item:focus {
    background: var(--fr-card2);
    color: var(--fr-text);
}
.dropdown-divider { border-top-color: var(--fr-border); }

/* ---- Navbar -------------------------------------------------------------- */
.fr-navbar {
    background: var(--fr-bg);
    border-bottom: 1px solid var(--fr-border);
    position: sticky;
    top: 0;
    z-index: 1030;
    padding: 0.75rem 0;
}
.fr-nav-link {
    color: var(--fr-muted);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.35rem 0;
    transition: color 0.2s;
}
.fr-nav-link:hover { color: var(--fr-text); }
.fr-navbar .navbar-toggler {
    border-radius: 0;
    border-color: var(--fr-border);
}

/* ---- Sections ------------------------------------------------------------ */
.fr-section {
    padding: 5rem 0;
    border-bottom: 1px solid var(--fr-border);
}
.fr-section-alt { background: var(--fr-card); }
.fr-section-header { margin-bottom: 3rem; }
.fr-section-title {
    font-family: 'Instrument Sans', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    line-height: 1.3;
    margin: 0.75rem 0 0.5rem;
}

/* ---- Hero ---------------------------------------------------------------- */
.fr-hero {
    padding: clamp(6rem, 8vh + 2rem, 9rem) 0 clamp(4.5rem, 6vh + 1.5rem, 7rem);
    border-bottom: 1px solid var(--fr-border);
}
.fr-hero-title {
    font-family: 'Instrument Sans', sans-serif;
    font-weight: 700;
    font-size: clamp(2.4rem, 6vw, 4rem);
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin: 0 0 1.25rem;
}
.fr-hero-sub {
    font-size: clamp(1.05rem, 2vw, 1.35rem);
    color: var(--fr-muted);
    max-width: 40rem;
    margin: 0 0 2rem;
}
.fr-hero-accent { color: var(--fr-accent); }

/* Code sample block used in the hero / migration section */
.fr-code {
    background: var(--fr-card);
    border: 1px solid var(--fr-border);
    color: var(--fr-text);
    font-family: 'SF Mono', ui-monospace, 'Menlo', monospace;
    font-size: 0.85rem;
    line-height: 1.7;
    padding: 1.25rem 1.5rem;
    overflow-x: auto;
    white-space: pre;
}
.fr-code .tok-key { color: var(--fr-muted); }
.fr-code .tok-hi { color: var(--fr-success); }

/* ---- Cards --------------------------------------------------------------- */
.fr-card {
    background: var(--fr-card);
    border: 1px solid var(--fr-border);
    border-radius: 0;
    padding: 1.5rem;
    height: 100%;
}
.fr-section-alt .fr-card { background: var(--fr-bg); }
.fr-card-icon {
    font-size: 1.5rem;
    color: var(--fr-accent);
    margin-bottom: 0.75rem;
    display: block;
}
.fr-card-title {
    font-weight: 700;
    font-size: 1.05rem;
    margin: 0 0 0.5rem;
}
.fr-card-body { color: var(--fr-muted); font-size: 0.95rem; margin: 0; }

/* Inline icon + title row for in-app tiles (keeps them on one line). */
.fr-card-head {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.5rem;
}
.fr-card-head .fr-card-icon { margin-bottom: 0; }
.fr-card-head .fr-card-title { margin-bottom: 0; }

.fr-step-num {
    font-family: 'Krona One', sans-serif;
    font-size: 0.85rem;
    color: var(--fr-accent);
}

/* ---- Forms (shared with app) -------------------------------------------- */
.fr-input, .form-control, .form-select {
    border-radius: 0 !important;
    background: var(--fr-bg);
    border: 1px solid var(--fr-border);
    color: var(--fr-text);
    padding: 0.625rem 0.875rem;
}
.fr-input:focus, .form-control:focus, .form-select:focus {
    border-color: var(--fr-accent);
    box-shadow: none;
    background: var(--fr-bg);
    color: var(--fr-text);
}

/* ---- Footer -------------------------------------------------------------- */
.fr-footer {
    background: var(--fr-bg);
    padding: 2.5rem 0;
    border-top: 1px solid var(--fr-border);
}
.fr-footer-link { color: var(--fr-muted); font-size: 0.875rem; transition: color 0.2s; }
.fr-footer-link:hover { color: var(--fr-text); }
.fr-footer-social { color: var(--fr-muted); font-size: 1.1rem; transition: color 0.2s; }
.fr-footer-social:hover { color: var(--fr-text); }
.fr-footer-copy { color: var(--fr-muted); font-size: 0.8rem; }

/* ---- Accordion (FAQ) ----------------------------------------------------- */
.accordion-item {
    background: transparent;
    border: 1px solid var(--fr-border);
    border-radius: 0 !important;
    margin-bottom: -1px;
}
.accordion-button {
    background: transparent;
    color: var(--fr-text);
    border-radius: 0 !important;
    font-weight: 600;
    box-shadow: none;
}
.accordion-button:not(.collapsed) { background: var(--fr-card); color: var(--fr-text); }
.accordion-button:focus { box-shadow: none; border-color: var(--fr-border); }
.accordion-body { color: var(--fr-muted); }

/* ---- Utilities ----------------------------------------------------------- */
.fr-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid var(--fr-border);
    padding: 0.3rem 0.7rem;
    font-size: 0.8rem;
    color: var(--fr-muted);
}

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 767.98px) {
    .fr-section { padding: 3.5rem 0; }
    .fr-section-header { margin-bottom: 2rem; }
    .fr-hero { padding: 4.5rem 0 3.5rem; }
}