/* ============================================================
   DynaWorks — header, right-side panel and mobile menu.
   Ported from the main site (dw-tokens.css, nav.css, and the header
   parts of style.css / mobile.css) so the blog's header looks and
   behaves exactly like dynaworks'. Desktop (>= 769px): burger opens
   the right panel. Mobile (<= 768px): burger opens the full-screen
   orange menu.
   ============================================================ */

:root {
    --dw-font-sans: "Space Grotesk", system-ui, sans-serif;
    --dw-font-mono: "Space Grotesk", ui-monospace, monospace;
    --dw-ink: #1a1a1a;
    --dw-muted: #8a887f;
    --dw-accent: #ff6b35;
    --dw-panel-bg: #1a1a1a;
    --dw-panel-fg: #efede6;
    --dw-panel-muted: #6b6961;
    --dw-panel-w: 420px;
    --dw-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
    --dw-header-h: 80px;
}

/* ---------- Header bar ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--dw-header-h);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 max(20px, 3vw);
    background-color: rgba(239, 237, 230, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(24, 15, 15, 0.12);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.scrolled {
    background-color: rgba(239, 237, 230, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

/* The header is fixed, so the page starts below it */
body { padding-top: var(--dw-header-h); }

.dw-nav__logo {
    font-family: var(--dw-font-sans);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: var(--dw-ink);
    text-decoration: none;
}

.dw-nav__clock {
    font-family: var(--dw-font-mono);
    font-size: 13px;
    letter-spacing: 0.5px;
    color: var(--dw-muted);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

/* ---------- Burger (desktop) ---------- */
.dw-nav__burger {
    display: none;
    background: none;
    border: 0;
    padding: 10px;
    margin: -10px;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.dw-nav__burger-line {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--dw-ink);
    transition: transform 0.35s var(--dw-ease);
}

.dw-nav__burger[aria-expanded="true"] .dw-nav__burger-line:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.dw-nav__burger[aria-expanded="true"] .dw-nav__burger-line:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

.dw-nav__burger:focus-visible {
    outline: 2px solid var(--dw-accent);
    outline-offset: 4px;
    border-radius: 4px;
}

/* The mobile menu markup sits in this slot; display: contents keeps
   .header-right / .mobile-menu-toggle as direct flex children. */
.dw-nav__mobile-slot { display: contents; }

/* Mobile menu pieces are hidden on desktop */
.header-right { display: none; }
.mobile-menu-toggle { display: none; }

@media (min-width: 769px) {
    .dw-nav__burger { display: flex; }
    .dw-nav__mobile-slot { display: none; }
}

/* ---------- Backdrop + panel (desktop) ---------- */
.dw-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(26, 26, 26, 0.4);
    z-index: 1040;
    opacity: 0;
    transition: opacity 0.35s var(--dw-ease);
}
.dw-backdrop.is-open { opacity: 1; }

.dw-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(var(--dw-panel-w), 90vw);
    background: var(--dw-panel-bg);
    z-index: 1050;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 48px;
    transform: translateX(100%);
    transition: transform 0.45s var(--dw-ease);
}
.dw-panel.is-open { transform: translateX(0); }
.dw-panel[hidden] { display: none; }

.dw-panel__nav { display: flex; flex-direction: column; gap: 4px; }

.dw-panel__link {
    display: flex;
    align-items: baseline;
    gap: 16px;
    padding: 12px 0;
    text-decoration: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.45s var(--dw-ease), transform 0.45s var(--dw-ease);
}
.dw-panel.is-open .dw-panel__link {
    opacity: 1;
    transform: translateY(0);
    transition-delay: calc(0.12s + var(--i) * 0.07s);
}

.dw-panel__num { font-family: var(--dw-font-mono); font-size: 12px; color: var(--dw-panel-muted); min-width: 20px; }
.dw-panel__label {
    font-family: var(--dw-font-sans);
    font-size: 32px;
    font-weight: 500;
    letter-spacing: -0.5px;
    color: var(--dw-panel-fg);
    transition: color 0.25s, transform 0.3s var(--dw-ease);
}
.dw-panel__arrow {
    font-size: 22px;
    color: var(--dw-accent);
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.25s, transform 0.3s var(--dw-ease);
}
.dw-panel__link:hover .dw-panel__label,
.dw-panel__link:focus-visible .dw-panel__label { color: var(--dw-accent); transform: translateX(10px); }
.dw-panel__link:hover .dw-panel__arrow,
.dw-panel__link:focus-visible .dw-panel__arrow { opacity: 1; transform: translateX(0); }
.dw-panel__link:focus-visible { outline: 2px solid var(--dw-accent); outline-offset: 4px; border-radius: 4px; }

.dw-panel__footer {
    display: flex;
    gap: 24px;
    margin-top: 48px;
    font-family: var(--dw-font-mono);
    font-size: 12px;
    color: var(--dw-panel-muted);
    opacity: 0;
    transition: opacity 0.4s 0.5s;
}
.dw-panel.is-open .dw-panel__footer { opacity: 1; }

/* ---------- Mobile (<= 768px) ---------- */
@media (max-width: 768px) {
    :root { --dw-header-h: 70px; }

    .site-header {
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }

    .dw-nav__logo { font-size: 1.4rem; z-index: 1002; position: relative; }

    /* No clock in the compact mobile bar, as on the main site */
    .dw-nav__clock { display: none; }

    .mobile-menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 44px;
        height: 44px;
        padding: 0;
        gap: 6px;
        z-index: 1002;
        background: transparent;
        border: none;
        cursor: pointer;
        position: relative;
    }
    .mobile-menu-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background: var(--dw-ink);
        transition: all 0.3s ease;
        transform-origin: center;
    }
    .mobile-menu-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .mobile-menu-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
    .mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

    /* Full-screen orange menu */
    .header-right {
        position: fixed;
        inset: 0;
        width: 100vw;
        height: 100vh;
        height: 100dvh;
        background: var(--dw-accent);
        display: none;
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: 120px 30px 40px;
        z-index: 1001;
        opacity: 0;
    }
    .header-right.active {
        display: flex;
        opacity: 1;
        animation: dwMenuIn 0.3s ease forwards;
    }

    .header-right .nav-link,
    .header-right .cta-pill {
        font-family: var(--dw-font-sans);
        font-size: clamp(3rem, 10vw, 4.5rem);
        font-weight: 700;
        color: var(--dw-ink);
        line-height: 1.1;
        margin-bottom: 15px;
        display: block;
        width: 100%;
        text-decoration: none;
        background: none;
        padding: 0;
        border: none;
    }
}

@keyframes dwMenuIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
    .dw-panel, .dw-panel__link, .dw-panel__label, .dw-panel__arrow,
    .dw-backdrop, .dw-nav__burger-line, .dw-panel__footer, .site-header {
        transition: none !important;
    }
}