/* ════════════════════════════════════════════════════════════════
   GUIDE LAYOUT — shared nav, sidebar, hero, section wrappers.
   Unlayered CSS so it wins the cascade over Tailwind @layer utilities.
════════════════════════════════════════════════════════════════ */

/* Remap all color tokens to match the portfolio's cool-slate palette */
:root,
[data-theme="light"] {
    --primary: #f36;
    --on-primary: #ffffff;
    --background: #f8fafc;
    --surface: #ffffff;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #f1f5f9;
    --surface-container: #f1f5f9;
    --surface-container-high: #e2e8f0;
    --surface-container-highest: #cbd5e1;
    --on-surface: #1e293b;
    --on-surface-variant: #64748b;
    --outline: #e2e8f0;
    --outline-variant: rgba(226, 232, 240, 0.5);
    --grid-color: #0f172a0d;
}

[data-theme="dark"],
.dark {
    --primary: #f36;
    --on-primary: #ffffff;
    --background: #020617;
    --surface: #0f172a;
    --surface-container-lowest: #020617;
    --surface-container-low: #1e293b;
    --surface-container: #1e293b;
    --surface-container-high: #334155;
    --surface-container-highest: #475569;
    --on-surface: #f1f5f9;
    --on-surface-variant: #94a3b8;
    --outline: #334155;
    --outline-variant: rgba(51, 65, 85, 0.5);
    --grid-color: #f8fafc0d;
}

body {
    font-family: Inter, ui-sans-serif, system-ui, sans-serif;
    background-color: var(--background);
    color: var(--on-surface);
}

/* ── Fixed top nav ─────────────────────────────────────────── */
.guide-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--surface) 90%, transparent);
    border-bottom: 1px solid var(--outline-variant);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.guide-nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    max-width: 1536px;
    margin: 0 auto;
}

.guide-nav-brand {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    color: var(--primary);
    text-transform: uppercase;
    text-decoration: none;
    line-height: 1;
}
.guide-nav-brand:hover { opacity: 1; color: var(--primary); }

.guide-nav-links {
    display: none;
    align-items: center;
    gap: 2rem;
    font-weight: 600;
}

.guide-nav-actions {
    display: none;
    align-items: center;
    gap: 1rem;
}

@media (min-width: 1024px) {
    .guide-nav-links  { display: flex; }
    .guide-nav-actions { display: flex; }
}

.guide-nav-link {
    color: var(--on-surface-variant);
    text-decoration: none;
    transition: color 0.2s;
}
.guide-nav-link:hover { color: var(--primary); opacity: 1; }

/* Theme toggle in nav */
.guide-theme-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--on-surface-variant);
    padding: 0.5rem;
    display: flex;
    align-items: center;
    transition: color 0.2s;
}
.guide-theme-btn:hover { color: var(--primary); }

/* Clear / Start Over button in nav */
.guide-clear-btn {
    border: 3px solid var(--on-surface);
    background: var(--primary);
    color: var(--on-primary);
    padding: 0.5rem 1.25rem;
    font-weight: 900;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    box-shadow: 3px 3px 0 var(--on-surface);
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.guide-clear-btn:hover { transform: translate(2px, 2px); box-shadow: none; }

/* Hamburger */
.guide-hamburger {
    display: flex;
    align-items: center;
    padding: 0.5rem;
    color: var(--primary);
    border: 1px solid color-mix(in srgb, var(--primary) 20%, transparent);
    border-radius: 0.5rem;
    background: none;
    cursor: pointer;
    transition: background 0.2s;
}
.guide-hamburger:hover { background: color-mix(in srgb, var(--primary) 10%, transparent); }

@media (min-width: 1024px) {
    .guide-hamburger { display: none; }
}

/* ── Mobile menu ───────────────────────────────────────────── */
.guide-mobile-menu {
    background: var(--surface-container);
    border-bottom: 1px solid var(--outline-variant);
}
.guide-mobile-menu.hidden { display: none; }

@media (min-width: 1024px) {
    .guide-mobile-menu { display: none !important; }
}

.guide-mobile-links {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.875rem;
}
.guide-mobile-links a {
    padding: 0.75rem 0;
    border-bottom: 1px solid color-mix(in srgb, var(--outline-variant) 30%, transparent);
    color: var(--on-surface);
    text-decoration: none;
    transition: color 0.2s;
}
.guide-mobile-links a:last-child { border-bottom: none; }
.guide-mobile-links a:hover,
.guide-mobile-links a.active { color: var(--primary); opacity: 1; }

/* ── Sidebar ───────────────────────────────────────────────── */
.guide-sidebar {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    height: 100%;
    width: 16rem;
    z-index: 40;
    background: color-mix(in srgb, var(--surface-container-low) 60%, transparent);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-right: 1px solid color-mix(in srgb, var(--outline-variant) 10%, transparent);
    flex-direction: column;
    padding-top: 5.5rem;
    padding-bottom: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}
@media (min-width: 1280px) {
    .guide-sidebar { display: flex; }
}

.guide-sidebar-head {
    padding: 0 1.5rem 1.5rem;
}
.guide-sidebar-title {
    color: var(--primary);
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: 0.125rem;
}
.guide-sidebar-sub {
    color: var(--on-surface-variant);
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.guide-sidebar-nav {
    flex: 1;
    overflow-y: auto;
}

.guide-sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--on-surface-variant);
    padding: 1rem;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: transform 0.3s;
}
.guide-sidebar-link:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(4px);
    opacity: 1;
    color: var(--on-surface-variant);
}
.guide-sidebar-link.active {
    background: color-mix(in srgb, var(--primary) 10%, transparent);
    color: var(--primary);
    border-right: 4px solid var(--primary);
}

.guide-sidebar-divider {
    padding: 1rem 1rem 0.5rem;
    margin-top: 0.5rem;
    border-top: 1px solid color-mix(in srgb, var(--outline-variant) 20%, transparent);
    color: var(--on-surface-variant);
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.guide-sidebar-footer { padding: 0 1.5rem; }

.guide-sidebar-cta {
    display: block;
    padding: 1rem;
    border: 1px solid color-mix(in srgb, var(--primary) 30%, transparent);
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.625rem;
    letter-spacing: 0.1em;
    text-align: center;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}
.guide-sidebar-cta:hover { background: var(--primary); color: var(--on-primary); opacity: 1; }

/* ── Main content ──────────────────────────────────────────── */
.guide-main {
    padding-top: 5rem;
    min-height: 100vh;
}
@media (min-width: 1280px) {
    .guide-main { padding-left: 16rem; }
}

/* ── Hero ──────────────────────────────────────────────────── */
.guide-hero {
    padding: 5rem 1.5rem 2.5rem;
}
@media (min-width: 768px) {
    .guide-hero { padding-left: 3rem; padding-right: 3rem; }
}
.guide-hero-inner {
    max-width: 56rem;
    margin: 0 auto;
}

.guide-hero-title {
    font-size: clamp(2.75rem, 8vw, 5.5rem);
    font-weight: 900;
    letter-spacing: -0.05em;
    line-height: 0.85;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    color: var(--primary);
    display: inline-block;
    transform: skewX(-6deg);
}

.guide-hero-subtitle {
    color: var(--on-surface-variant);
    font-size: 1.125rem;
    line-height: 1.6;
    font-weight: 500;
    max-width: 42rem;
}

/* ── Chat/form section ─────────────────────────────────────── */
.guide-section {
    padding: 0 1.5rem 2rem;
}
@media (min-width: 768px) {
    .guide-section { padding-left: 3rem; padding-right: 3rem; }
}
.guide-section-inner {
    max-width: 52rem;
    margin: 0 auto;
}
.guide-section-inner--wide {
    max-width: 80rem;
    margin: 0 auto;
}

/* ── Tool cards ────────────────────────────────────────────── */
.guide-cards {
    padding: 0 1.5rem 4rem;
}
@media (min-width: 768px) {
    .guide-cards { padding-left: 3rem; padding-right: 3rem; }
}
.guide-cards-inner {
    max-width: 56rem;
    margin: 0 auto;
}
.guide-cards-sub {
    color: var(--on-surface-variant);
    font-size: 1.125rem;
    line-height: 1.6;
    font-weight: 500;
    margin-bottom: 2rem;
}