/* =========================================================
   talegrapher.com -- kinetic typography hero
   Palette:  #0a0a0a  #fafafa  #e63946  #ffd700  #6b7280
   Fonts:    Anton / Libre Baskerville / Work Sans / Inter
   ========================================================= */

:root {
    --stage-black: #0a0a0a;
    --paper-white: #fafafa;
    --spotlight:   #e63946;
    --flash:       #ffd700;
    --whisper:     #6b7280;

    --display: "Anton", "Work Sans", "Inter", system-ui, sans-serif;
    --serif:   "Libre Baskerville", Georgia, serif;
    --body:    "Work Sans", "Inter", system-ui, sans-serif;
    --ui:      "Inter", "Work Sans", system-ui, sans-serif;

    --pause: 30vh;
    --gutter: clamp(1.25rem, 4vw, 4rem);
    --ease-stage: cubic-bezier(.2, .7, .2, 1);
    --ease-quick: cubic-bezier(.5, 0, .2, 1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    background: var(--stage-black);
    color: var(--paper-white);
    font-family: var(--body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body { min-height: 100vh; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
ol, ul { list-style: none; }
img, svg { display: block; max-width: 100%; }

/* ---------- progress chip ---------- */
.scene-progress {
    position: fixed;
    top: 1.25rem;
    right: 1.5rem;
    z-index: 60;
    font-family: var(--ui);
    font-size: .72rem;
    letter-spacing: .25em;
    color: var(--whisper);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: .9rem;
    padding: .55rem .9rem;
    background: rgba(10, 10, 10, .55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(250, 250, 250, .12);
    transition: color .4s var(--ease-stage), background .4s var(--ease-stage), border-color .4s var(--ease-stage);
}

.scene-progress.on-light {
    color: var(--whisper);
    background: rgba(250, 250, 250, .65);
    border-color: rgba(10, 10, 10, .12);
}

.progress-bar {
    display: inline-block;
    width: 64px;
    height: 2px;
    background: rgba(255, 255, 255, .15);
    position: relative;
    overflow: hidden;
}
.scene-progress.on-light .progress-bar { background: rgba(10, 10, 10, .15); }

.progress-bar::after {
    content: "";
    position: absolute;
    inset: 0;
    width: var(--p, 12%);
    background: var(--spotlight);
    transition: width .5s var(--ease-stage);
}

.progress-label em {
    color: var(--paper-white);
    font-style: normal;
    font-weight: 600;
}
.scene-progress.on-light .progress-label em { color: var(--stage-black); }

/* ---------- masthead ---------- */
.masthead {
    position: fixed;
    top: 1.25rem;
    left: 1.5rem;
    z-index: 60;
    display: flex;
    align-items: center;
    gap: 2rem;
    font-family: var(--ui);
    font-size: .78rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    transition: color .4s var(--ease-stage);
}

.masthead.on-light { color: var(--stage-black); }
.masthead:not(.on-light) { color: var(--paper-white); }

.masthead-mark {
    font-family: var(--display);
    font-size: 1.4rem;
    letter-spacing: .05em;
    line-height: 1;
}

.masthead-menu {
    display: flex;
    gap: 1.4rem;
}

.masthead-menu a {
    position: relative;
    padding: .15rem 0;
    transition: color .25s var(--ease-quick);
}

.masthead-menu a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -.2rem;
    width: 100%;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s var(--ease-stage);
}

.masthead-menu a:hover { color: var(--spotlight); }
.masthead-menu a:hover::after { transform: scaleX(1); }

/* ---------- scene base ---------- */
main { display: block; }

.scene {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--pause) var(--gutter);
    position: relative;
    overflow: hidden;
    transition: background .6s var(--ease-stage), color .6s var(--ease-stage);
}

.scene-tall { min-height: 130vh; }
.scene-final { min-height: 110vh; }

.scene-dark {
    background: var(--stage-black);
    color: var(--paper-white);
}
.scene-light {
    background: var(--paper-white);
    color: var(--stage-black);
}

/* fade between scenes */
.scene::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 14vh;
    pointer-events: none;
    z-index: 1;
}
.scene-dark::before {
    background: linear-gradient(to bottom, var(--paper-white) 0%, rgba(250, 250, 250, 0) 100%);
    opacity: .04;
}
.scene-light::before {
    background: linear-gradient(to bottom, var(--stage-black) 0%, rgba(10, 10, 10, 0) 100%);
    opacity: .04;
}

/* scene number sticker */
.scene::after {
    content: attr(data-scene) "  /  " attr(data-label);
    position: absolute;
    bottom: 1.2rem;
    left: 1.5rem;
    font-family: var(--ui);
    font-size: .68rem;
    letter-spacing: .35em;
    text-transform: uppercase;
    color: var(--whisper);
    z-index: 2;
}

.scene-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1240px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: clamp(1.5rem, 4vh, 3rem);
}

.scene-inner.align-left { align-items: flex-start; text-align: left; }
.scene-inner.align-right { align-items: flex-end; text-align: right; }
.scene-inner.align-center { align-items: center; text-align: center; }
.scene-inner.stack-words { gap: clamp(.4rem, 2vh, 1.2rem); }

/* ---------- typography ---------- */
.display-mega {
    font-family: var(--display);
    font-weight: 400;
    font-size: clamp(3rem, 14vw, 11rem);
    line-height: .85;
    letter-spacing: .005em;
    text-transform: uppercase;
}

.display-huge {
    font-family: var(--display);
    font-weight: 400;
    font-size: clamp(3rem, 13vw, 9rem);
    line-height: .9;
    letter-spacing: .005em;
    text-transform: uppercase;
}

.display-large {
    font-family: var(--display);
    font-weight: 400;
    font-size: clamp(2.25rem, 7vw, 5rem);
    line-height: 1;
    letter-spacing: .005em;
    text-transform: uppercase;
}

.display-bleed {
    font-family: var(--display);
    font-weight: 400;
    font-size: clamp(4rem, 22vw, 18rem);
    line-height: .82;
    letter-spacing: -.01em;
    text-transform: uppercase;
}

.serif-line {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(1.1rem, 2vw, 1.75rem);
    line-height: 1.5;
    color: var(--whisper);
}
.italic-line { font-style: italic; }

.body-line {
    font-family: var(--body);
    font-weight: 400;
    font-size: clamp(1rem, 1.4vw, 1.2rem);
    line-height: 1.7;
    max-width: 52ch;
    color: var(--whisper);
}

.cue {
    font-family: var(--ui);
    font-size: .72rem;
    letter-spacing: .35em;
    text-transform: uppercase;
    color: var(--whisper);
}

.cue-top { margin-bottom: 1rem; }
.cue-bottom { margin-top: 1.5rem; opacity: .7; }

/* ---------- letter / split-color tricks ---------- */
.split-word {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: clamp(.05em, .3vw, .12em);
}

.split-word .letter {
    display: inline-block;
    transform: translateY(110%) rotate(8deg);
    opacity: 0;
    will-change: transform, opacity;
}

.split-word.in .letter {
    animation: letterIn .9s var(--ease-stage) forwards;
    animation-delay: calc(var(--i) * 50ms);
}

@keyframes letterIn {
    0%   { transform: translateY(110%) rotate(8deg); opacity: 0; }
    60%  { opacity: 1; }
    100% { transform: translateY(0) rotate(0); opacity: 1; }
}

/* split-color word: half red, half black/white */
.split-color {
    background: linear-gradient(90deg, var(--spotlight) 50%, var(--stage-black) 50%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    display: inline-block;
}

.scene-dark .split-color {
    background: linear-gradient(90deg, var(--spotlight) 50%, var(--paper-white) 50%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.spotlight { color: var(--spotlight); }
.flash { color: var(--flash); }

.ink-spot {
    position: relative;
    color: var(--spotlight);
    padding: 0 .12em;
}
.ink-spot::after {
    content: "";
    position: absolute;
    left: 0; right: 0;
    bottom: .12em;
    height: .14em;
    background: var(--flash);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .9s .3s var(--ease-stage);
}
.scene-light.in .ink-spot::after,
.scene-dark.in .ink-spot::after { transform: scaleX(1); }

/* stretch effect on STORY */
.stretch-word {
    display: inline-block;
    transform: scaleX(.35);
    transform-origin: center;
    opacity: 0;
    transition: transform 1.1s var(--ease-stage), opacity .7s var(--ease-stage);
}
.stretch-word.in {
    transform: scaleX(1);
    opacity: 1;
}

/* fly-in stack */
.fly-in {
    opacity: 0;
    transform: translateX(-20vw) skewX(-12deg);
    transition: transform 1s var(--ease-stage), opacity .7s var(--ease-stage);
    transition-delay: calc(var(--d, 0) * 1ms);
}
.fly-in.in {
    opacity: 1;
    transform: translateX(0) skewX(0);
}
.fly-in:nth-child(even) {
    transform: translateX(20vw) skewX(12deg);
}
.fly-in:nth-child(even).in {
    transform: translateX(0) skewX(0);
}

/* generic reveal */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .8s var(--ease-stage), transform .8s var(--ease-stage);
    transition-delay: calc(var(--d, 0) * 1ms);
}
.reveal.in {
    opacity: 1;
    transform: translateY(0);
}

.scale-in {
    transform: scale(.86) translateY(28px);
}
.scale-in.in {
    transform: scale(1) translateY(0);
}

.slide-from-left {
    transform: translateX(-30vw) translateY(0);
}
.slide-from-left.in { transform: translateX(0); }

.slide-from-right {
    transform: translateX(30vw) translateY(0);
}
.slide-from-right.in { transform: translateX(0); }

/* ---------- scene 4: method list ---------- */
.method-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
    font-family: var(--serif);
    font-size: clamp(1.1rem, 1.8vw, 1.6rem);
    line-height: 1.5;
}

.method-list li {
    padding-left: 0;
    border-bottom: 1px solid rgba(10, 10, 10, .08);
    padding-bottom: .8rem;
    display: flex;
    gap: 1rem;
}

.method-list .num {
    font-family: var(--display);
    font-style: normal;
    color: var(--spotlight);
    min-width: 2.4em;
    font-size: 1.05em;
}

/* ---------- scene 5: bleed lines ---------- */
.scene-tall .scene-inner { gap: clamp(.5rem, 2vh, 1.2rem); }
.line-1 { color: var(--paper-white); }
.line-2 {
    color: var(--stage-black);
    background: linear-gradient(90deg, var(--flash) 0%, var(--flash) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: var(--flash);
}
.line-3 { /* split-color already applied */ }

/* ---------- scene 6: ASCII gallery ---------- */
.ascii-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: clamp(1.5rem, 4vw, 3rem);
    width: 100%;
    margin-top: 1.5rem;
}

.ascii-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 1rem;
    border: 1px solid rgba(10, 10, 10, .12);
    background: rgba(10, 10, 10, .02);
    transition: transform .35s var(--ease-stage), border-color .35s var(--ease-stage), background .35s var(--ease-stage);
}

.ascii-card:hover {
    transform: translateY(-4px);
    border-color: var(--spotlight);
    background: rgba(230, 57, 70, .04);
}

.ascii-art {
    font-family: "Courier New", ui-monospace, monospace;
    font-size: clamp(.85rem, 1vw, 1rem);
    line-height: 1.2;
    white-space: pre;
    color: var(--stage-black);
    text-align: left;
}

.ascii-card:hover .ascii-art { color: var(--spotlight); }

.ascii-card figcaption {
    font-family: var(--serif);
    font-style: italic;
    font-size: .95rem;
    color: var(--whisper);
    text-align: center;
}

.ascii-card figcaption strong {
    font-family: var(--display);
    font-style: normal;
    font-size: 1.4rem;
    letter-spacing: .03em;
    color: var(--stage-black);
    display: block;
    margin-bottom: .25rem;
    text-transform: uppercase;
}

/* ---------- scene 7: marquee + pull quote ---------- */
.marquee {
    position: absolute;
    top: 18%;
    left: 0;
    right: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
    border-top: 1px solid rgba(250, 250, 250, .08);
    border-bottom: 1px solid rgba(250, 250, 250, .08);
}

.marquee-track {
    display: inline-flex;
    white-space: nowrap;
    font-family: var(--display);
    font-size: clamp(3rem, 10vw, 8rem);
    line-height: 1;
    letter-spacing: .02em;
    text-transform: uppercase;
    color: rgba(250, 250, 250, .12);
    animation: marquee 38s linear infinite;
    will-change: transform;
}

.marquee-track .spotlight { color: rgba(230, 57, 70, .35); }
.marquee-track .flash { color: rgba(255, 215, 0, .35); }

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

.scene-7-quote { margin-top: 8vh; }

.pullquote {
    font-family: var(--serif);
    font-style: italic;
    font-size: clamp(1.6rem, 3.5vw, 3rem);
    line-height: 1.35;
    color: var(--paper-white);
    max-width: 22ch;
}

.pullquote em {
    color: var(--spotlight);
    font-style: italic;
}

/* ---------- scene 8: terminal + form ---------- */
.terminal {
    width: 100%;
    max-width: 720px;
    border: 1px solid var(--stage-black);
    background: var(--stage-black);
    color: var(--paper-white);
    font-family: "Courier New", ui-monospace, monospace;
    box-shadow: 8px 8px 0 var(--spotlight);
    text-align: left;
    margin-bottom: 1rem;
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .55rem .85rem;
    border-bottom: 1px solid rgba(250, 250, 250, .12);
    font-size: .72rem;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--whisper);
    font-family: var(--ui);
}

.dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    display: inline-block;
}
.dot-red { background: var(--spotlight); }
.dot-amber { background: var(--flash); }
.dot-green { background: #10b981; }
.terminal-title { margin-left: .6rem; }

.terminal-body {
    padding: 1.4rem 1.2rem;
    min-height: 9rem;
    font-size: clamp(.95rem, 1.2vw, 1.15rem);
    line-height: 1.7;
}

.term-line {
    margin: .15rem 0;
}

.term-line .prompt {
    color: var(--spotlight);
    margin-right: .35em;
    font-weight: bold;
}

.term-line .typed { color: var(--paper-white); }

.caret {
    display: inline-block;
    color: var(--flash);
    animation: blink 1s steps(1) infinite;
    margin-left: 1px;
}
.caret.hidden { display: none; }

@keyframes blink {
    50% { opacity: 0; }
}

.seed-form {
    display: flex;
    gap: 1rem;
    width: 100%;
    max-width: 720px;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.seed-input {
    flex: 1 1 16rem;
    font-family: var(--display);
    font-size: clamp(1.4rem, 3vw, 2.4rem);
    text-transform: uppercase;
    letter-spacing: .02em;
    background: transparent;
    color: var(--stage-black);
    border: none;
    border-bottom: 3px solid var(--stage-black);
    padding: .6rem .2rem;
    outline: none;
    transition: border-color .3s var(--ease-quick);
}

.seed-input::placeholder {
    color: var(--whisper);
    text-transform: uppercase;
    font-family: var(--display);
}

.seed-input:focus { border-bottom-color: var(--spotlight); }

.seed-button {
    font-family: var(--ui);
    font-weight: 600;
    font-size: .85rem;
    letter-spacing: .25em;
    text-transform: uppercase;
    padding: 1rem 1.6rem;
    background: var(--stage-black);
    color: var(--paper-white);
    border: 1px solid var(--stage-black);
    box-shadow: 6px 6px 0 var(--spotlight);
    transition: transform .2s var(--ease-quick), box-shadow .2s var(--ease-quick), background .2s var(--ease-quick);
    align-self: stretch;
}

.seed-button:hover {
    transform: translate(-2px, -2px);
    box-shadow: 9px 9px 0 var(--spotlight);
    background: var(--spotlight);
    border-color: var(--spotlight);
}

.seed-button:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--spotlight);
}

.seed-output {
    margin-top: 1rem;
    font-family: var(--serif);
    font-style: italic;
    font-size: clamp(1.05rem, 1.6vw, 1.4rem);
    color: var(--stage-black);
    min-height: 2em;
    line-height: 1.5;
    max-width: 720px;
}

.seed-output .arrow { color: var(--spotlight); margin: 0 .35em; }
.seed-output .accent { color: var(--spotlight); font-style: normal; font-family: var(--display); text-transform: uppercase; letter-spacing: .05em; }

/* ---------- curtain footer ---------- */
.curtain {
    background: var(--stage-black);
    color: var(--paper-white);
    padding: 14vh var(--gutter) 6vh;
    text-align: center;
    border-top: 1px solid rgba(250, 250, 250, .08);
}

.curtain-text {
    font-family: var(--display);
    font-size: clamp(4rem, 18vw, 14rem);
    line-height: .9;
    letter-spacing: .05em;
    color: var(--paper-white);
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, var(--spotlight) 50%, var(--paper-white) 50%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.curtain-sub {
    font-family: var(--ui);
    font-size: .75rem;
    letter-spacing: .35em;
    text-transform: uppercase;
    color: var(--whisper);
}

/* ---------- responsive ---------- */
@media (max-width: 720px) {
    .masthead-menu { display: none; }
    .scene-progress { right: 1rem; padding: .45rem .7rem; }
    .scene { padding: 18vh var(--gutter); }
    .ascii-gallery { grid-template-columns: 1fr; }
    .marquee { top: 12%; }
    .scene-7-quote { margin-top: 4vh; }
}

@media (max-width: 460px) {
    .scene-progress .progress-bar { width: 36px; }
    .terminal-body { padding: 1.1rem .9rem; }
    .seed-form { flex-direction: column; }
    .seed-button { align-self: flex-start; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: .001ms !important;
        animation-delay: 0ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
        transition-delay: 0ms !important;
    }

    .reveal,
    .stretch-word,
    .fly-in,
    .split-word .letter {
        opacity: 1 !important;
        transform: none !important;
    }

    .marquee-track { animation: none; }
    .caret { animation: none; opacity: 1; }
}