/* ===========================================================
   components.css — reusable UI primitives:
   nav, progress rail, buttons, chips, cards, marquee,
   schematic divider, custom cursor, theme toggle, tags
   =========================================================== */

/* ---------- Progress rail (top scroll indicator) ---------- */
.progress-rail {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: transparent;
    z-index: var(--z-progress);
    pointer-events: none;
}

.progress-rail__fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-warm) 100%);
    transform-origin: left center;
    transition: width 80ms linear;
    box-shadow: 0 0 18px var(--accent-glow);
}

/* ---------- Nav ---------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    padding: 0.85rem var(--gutter);
    transition: backdrop-filter var(--dur-fast) var(--ease-smooth),
                background var(--dur-fast) var(--ease-smooth),
                border-color var(--dur-fast) var(--ease-smooth);
}

.nav.is-scrolled {
    background: color-mix(in srgb, var(--bg) 78%, transparent);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    border-bottom: 1px solid var(--line);
}

.nav__inner {
    width: 100%;
    max-width: var(--container-wide);
    margin-inline: auto;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: clamp(1rem, 4vw, 3rem);
}

.nav__brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--text);
    transition: opacity var(--dur-fast) var(--ease-smooth);
}

.nav__brand:hover { opacity: 0.85; }

.nav__mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    color: var(--text);
    border: 1px solid var(--line-strong);
    border-radius: var(--r-sm);
    background: var(--surface);
    transition: border-color var(--dur-fast) var(--ease-smooth),
                color var(--dur-fast) var(--ease-smooth);
}

.nav__brand:hover .nav__mark {
    border-color: var(--accent);
    color: var(--accent);
}

.nav__brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.nav__brand-name {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: var(--w-medium);
    letter-spacing: var(--ls-tight);
    color: var(--text);
}

.nav__brand-role {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: var(--ls-wider);
    text-transform: uppercase;
    color: var(--text-subtle);
    margin-top: 2px;
}

.nav__links {
    justify-self: center;
    display: flex;
    align-items: center;
    gap: clamp(0.65rem, 2vw, 1.6rem);
}

.nav__links a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.875rem;
    font-weight: var(--w-medium);
    color: var(--text-mute);
    padding: 0.4rem 0;
    position: relative;
    transition: color var(--dur-fast) var(--ease-smooth);
}

.nav__links a:hover,
.nav__links a.is-active {
    color: var(--text);
}

.nav__links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width var(--dur-base) var(--ease-out);
}

.nav__links a:hover::after,
.nav__links a.is-active::after {
    width: 100%;
}

.nav__num {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    color: var(--text-faint);
    letter-spacing: var(--ls-mono);
}

.nav__actions {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    justify-self: end;
}

@media (max-width: 1000px) {
    .nav__links { display: none; }
    .nav__brand-role { display: none; }
}

@media (max-width: 480px) {
    .nav__cta span { display: none; }
    .nav__cta { padding: 0.55rem; }
}

/* ---------- Buttons ---------- */
.btn {
    --btn-pad-x: 1.5rem;
    --btn-pad-y: 0.85rem;
    --btn-bg: var(--text);
    --btn-fg: var(--ink);
    --btn-border: transparent;

    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    padding: var(--btn-pad-y) var(--btn-pad-x);
    background: var(--btn-bg);
    color: var(--btn-fg);
    border: 1px solid var(--btn-border);
    border-radius: var(--r-pill);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: var(--w-medium);
    letter-spacing: -0.005em;
    cursor: pointer;
    overflow: hidden;
    transition: transform var(--dur-fast) var(--ease-smooth),
                background var(--dur-fast) var(--ease-smooth),
                color var(--dur-fast) var(--ease-smooth),
                border-color var(--dur-fast) var(--ease-smooth);
}

.btn:not([data-magnetic]):hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
    --btn-bg: var(--accent);
    --btn-fg: var(--ink);
}

.btn--primary:hover {
    --btn-bg: var(--accent-warm);
}

.btn--secondary {
    --btn-bg: transparent;
    --btn-fg: var(--text);
    --btn-border: var(--line-strong);
}

.btn--secondary:hover {
    --btn-bg: var(--surface);
    --btn-border: var(--line-bold);
}

.btn--ghost {
    --btn-bg: transparent;
    --btn-fg: var(--text);
    --btn-border: var(--line-strong);
    --btn-pad-y: 0.55rem;
    --btn-pad-x: 1rem;
    font-size: 0.84rem;
}

.btn--ghost:hover {
    --btn-bg: var(--surface);
    --btn-border: var(--accent);
    --btn-fg: var(--accent);
}

.btn--small {
    --btn-pad-y: 0.55rem;
    --btn-pad-x: 1rem;
    font-size: 0.84rem;
}

.btn--lg {
    --btn-pad-y: 1.05rem;
    --btn-pad-x: 1.85rem;
    font-size: 1.0625rem;
}

.btn svg {
    transition: transform var(--dur-fast) var(--ease-spring);
}

.btn:hover svg {
    transform: translateX(2px);
}

.btn--primary:hover svg.icon-down {
    transform: translateY(2px);
}

/* ---------- Chips ---------- */
.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.85rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: var(--w-medium);
    color: var(--text-mute);
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: var(--r-pill);
    letter-spacing: 0;
    transition: color var(--dur-fast) var(--ease-smooth),
                border-color var(--dur-fast) var(--ease-smooth),
                background var(--dur-fast) var(--ease-smooth),
                transform var(--dur-fast) var(--ease-smooth);
    white-space: nowrap;
}

.chip:hover {
    color: var(--text);
    border-color: var(--accent);
    background: var(--accent-soft);
    transform: translateY(-1px);
}

.chip--solid {
    background: var(--surface);
    color: var(--text);
    border-color: var(--line);
}

.chip--accent {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
}

.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

/* ---------- Card ---------- */
.card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    padding: clamp(1.5rem, 3vw, 2.5rem);
    transition: border-color var(--dur-base) var(--ease-smooth),
                background var(--dur-base) var(--ease-smooth),
                transform var(--dur-base) var(--ease-smooth);
}

.card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, transparent, transparent 50%, var(--accent-glow));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--dur-base) var(--ease-smooth);
    pointer-events: none;
}

.card:hover {
    border-color: var(--line-strong);
    background: var(--surface-elev);
}

.card:hover::before {
    opacity: 1;
}

/* ---------- Custom cursor ---------- */
.cursor {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: var(--z-cursor);
    mix-blend-mode: difference;
    display: var(--cursor-display, block);
}

.cursor__dot,
.cursor__ring {
    position: absolute;
    top: 0;
    left: 0;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    will-change: transform, width, height;
}

.cursor__dot {
    width: 6px;
    height: 6px;
    background: #FFFFFF;
    transition: width var(--dur-fast) var(--ease-spring),
                height var(--dur-fast) var(--ease-spring),
                opacity var(--dur-fast) var(--ease-smooth);
}

.cursor__ring {
    width: 32px;
    height: 32px;
    border: 1px solid #FFFFFF;
    transition: width var(--dur-fast) var(--ease-spring),
                height var(--dur-fast) var(--ease-spring),
                border-color var(--dur-fast) var(--ease-smooth),
                opacity var(--dur-fast) var(--ease-smooth);
}

.cursor.is-hover .cursor__dot {
    width: 0;
    height: 0;
    opacity: 0;
}

.cursor.is-hover .cursor__ring {
    width: 56px;
    height: 56px;
}

.cursor.is-hidden { opacity: 0; }
.cursor.is-text .cursor__ring { opacity: 0.4; }
.cursor.is-text .cursor__dot { width: 2px; height: 22px; border-radius: 2px; }

@media (hover: none), (pointer: coarse) {
    .cursor { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    .cursor { display: none; }
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: border-color var(--dur-fast) var(--ease-smooth),
                color var(--dur-fast) var(--ease-smooth),
                background var(--dur-fast) var(--ease-smooth);
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.theme-toggle__icon {
    position: absolute;
    transition: transform var(--dur-base) var(--ease-spring),
                opacity var(--dur-fast) var(--ease-smooth);
}

[data-theme="dark"] .theme-toggle__icon--moon { transform: rotate(0) scale(1); opacity: 1; }
[data-theme="dark"] .theme-toggle__icon--sun  { transform: rotate(-90deg) scale(0.5); opacity: 0; }
[data-theme="light"] .theme-toggle__icon--moon { transform: rotate(90deg) scale(0.5); opacity: 0; }
[data-theme="light"] .theme-toggle__icon--sun  { transform: rotate(0) scale(1); opacity: 1; }

/* ---------- Schematic divider ---------- */
.schematic {
    position: relative;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-faint);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: var(--ls-wider);
    text-transform: uppercase;
    padding-block: var(--s-5);
}

.schematic::before,
.schematic::after {
    content: "";
    height: 1px;
    background: var(--line-strong);
    flex: 1;
}

.schematic--center { justify-content: center; }
.schematic--start::before { display: none; }
.schematic--end::after { display: none; }

/* ---------- Marquee ---------- */
.marquee {
    width: 100%;
    overflow: hidden;
    border-block: 1px solid var(--line);
    background: var(--surface-soft);
    padding-block: clamp(1.25rem, 2.5vw, 2rem);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
            mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.marquee__track {
    display: flex;
    width: max-content;
    gap: clamp(2rem, 5vw, 4rem);
    animation: marquee-scroll 48s linear infinite;
}

.marquee__track--reverse { animation-direction: reverse; animation-duration: 56s; }

.marquee:hover .marquee__track { animation-play-state: paused; }

.marquee__item {
    display: inline-flex;
    align-items: center;
    gap: clamp(2rem, 5vw, 4rem);
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3.5vw, 2.75rem);
    font-weight: var(--w-light);
    letter-spacing: var(--ls-tight);
    color: var(--text);
    line-height: 1;
    text-wrap: nowrap;
}

.marquee__item-text { white-space: nowrap; }

.marquee__sep {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    opacity: 0.6;
}

@keyframes marquee-scroll {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
    .marquee__track { animation: none; }
}

/* ---------- Pinned outcome (used in work cards) ---------- */
.pinned {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.35rem 0.7rem;
    background: var(--accent-soft);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: var(--ls-mono);
    border-radius: var(--r-sm);
    border: 1px solid var(--accent-glow);
}

.pinned::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

/* ---------- Tag (small inline label) ---------- */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.2rem 0.55rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-mute);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-xs);
    letter-spacing: var(--ls-mono);
    text-transform: uppercase;
}

/* ---------- Status dot (e.g. "Available") ---------- */
.status-dot {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-mute);
    letter-spacing: var(--ls-mono);
}

.status-dot::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4ADE80;
    box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.4);
    animation: pulse-dot 2.4s ease-out infinite;
}

@keyframes pulse-dot {
    0%   { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.55); }
    70%  { box-shadow: 0 0 0 10px rgba(74, 222, 128, 0); }
    100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

@media (prefers-reduced-motion: reduce) {
    .status-dot::before { animation: none; }
}

/* ---------- Magnetic primitive ----------
   JS sets --mag-x / --mag-y on hover; transitions handle the smoothing.
*/
[data-magnetic] {
    transform: translate3d(var(--mag-x, 0), var(--mag-y, 0), 0);
    transition: transform 280ms var(--ease-smooth);
    will-change: transform;
}

@media (hover: none), (pointer: coarse) {
    [data-magnetic] { transform: none; transition: none; }
}

@media (prefers-reduced-motion: reduce) {
    [data-magnetic] { transform: none; transition: none; }
}

/* ---------- Arrow link ---------- */
.arrow-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent);
    font-weight: var(--w-medium);
    font-size: 0.92rem;
    letter-spacing: -0.005em;
    transition: gap var(--dur-fast) var(--ease-smooth),
                color var(--dur-fast) var(--ease-smooth);
}

.arrow-link:hover { gap: 0.7rem; color: var(--accent-warm); }

.arrow-link::after {
    content: "→";
    transition: transform var(--dur-fast) var(--ease-spring);
}

.arrow-link:hover::after { transform: translateX(2px); }