/* ================================================
   reiwa.day — Vaporwave Kinetic Urbanism
   Palette: Honeyed-Neutral
   Layout: Diagonal Sections
   ================================================ */

/* --- CSS Variables --- */
:root {
    --warm-amber: #d4a855;
    --gilded-haze: #e8d5a0;
    --pale-champagne: #f5ecd4;
    --dusty-mauve: #b8a1b5;
    --evening-plum: #4a3248;
    --deep-twilight: #2a2038;
    --faded-rose: #c9a8a0;
    --honey-cream: #f0e2c0;

    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Lora', serif;
    --font-mono: 'DM Mono', monospace;

    --diagonal-angle: 12deg;
    --diagonal-angle-neg: -12deg;
    --morph-ease: cubic-bezier(0.34, 1.56, 0.64, 1);
    --smooth-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--deep-twilight);
    background: var(--deep-twilight);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Scroll Progress Indicator --- */
.scroll-progress {
    position: fixed;
    right: 10px;
    top: 50%;
    transform: translateY(-50%) rotate(15deg);
    width: 6px;
    height: 60vh;
    background: rgba(42, 32, 56, 0.3);
    z-index: 1000;
    border-radius: 3px;
    overflow: hidden;
    mix-blend-mode: screen;
}

.scroll-progress-fill {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0%;
    background: linear-gradient(to top, var(--warm-amber), var(--dusty-mauve));
    border-radius: 3px;
    transition: height 0.1s linear;
}

/* --- Section Base --- */
.section {
    position: relative;
    width: 100%;
    overflow: hidden;
}

/* --- Bokeh Field --- */
.bokeh-field {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.bokeh-circle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    opacity: 0;
    transform: scale(0.3);
    transition: opacity 500ms ease-out, transform 500ms ease-out;
}

.bokeh-circle.visible {
    opacity: var(--bokeh-opacity, 0.25);
    transform: scale(1);
}

/* --- Diagonal Lines --- */
.diagonal-draw-line {
    stroke: var(--dusty-mauve);
    stroke-width: 2;
    stroke-opacity: 0.5;
    stroke-dasharray: 1500;
    stroke-dashoffset: 1500;
}

.diagonal-draw-line.drawn {
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 1200ms var(--smooth-ease);
}

.diagonal-line-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

/* --- Accent Lines --- */
.accent-line {
    position: absolute;
    width: 120%;
    height: 1px;
    background: var(--dusty-mauve);
    opacity: 0.4;
    transform-origin: center center;
}

.accent-line-1 {
    top: 30%;
    left: -10%;
    transform: rotate(var(--diagonal-angle));
}

.accent-line-2 {
    top: 35%;
    left: -10%;
    transform: rotate(var(--diagonal-angle));
}

/* ================================================
   SECTION 0: THE APPROACH
   ================================================ */
.section-approach {
    min-height: 110vh;
    background: var(--deep-twilight);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 5;
}

.approach-title {
    position: relative;
    z-index: 10;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(3.5rem, 10vw, 9rem);
    color: var(--pale-champagne);
    letter-spacing: -0.03em;
    line-height: 0.92;
    transform: rotate(-3deg);
    display: flex;
    gap: 0;
}

.title-char {
    display: inline-block;
    opacity: 0;
    transform: scaleY(0.05) skewX(20deg);
    transition: opacity 400ms var(--morph-ease), transform 400ms var(--morph-ease);
}

.title-char.revealed {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

.era-notation {
    position: relative;
    z-index: 10;
    margin-top: 2rem;
    opacity: 0;
    transform: translateY(20px) rotate(-3deg);
    transition: opacity 600ms ease-out 2400ms, transform 600ms ease-out 2400ms;
}

.era-notation.visible {
    opacity: 1;
    transform: translateY(0) rotate(-3deg);
}

.mono-accent {
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: clamp(0.75rem, 1.2vw, 0.9rem);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--warm-amber);
}

/* ================================================
   SECTION 1: THE TILT
   ================================================ */
.section-tilt {
    min-height: 100vh;
    position: relative;
    clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 85%);
    z-index: 4;
}

.tilt-bg-upper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--warm-amber);
    clip-path: polygon(0% 0%, 100% 0%, 60% 100%, 0% 100%);
    z-index: 0;
}

.tilt-bg-lower {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--deep-twilight);
    clip-path: polygon(60% 0%, 100% 0%, 100% 100%, 20% 100%);
    z-index: 0;
}

.tilt-content {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 4rem 2rem;
    transform: rotate(var(--diagonal-angle));
    max-width: 700px;
    margin: 0 auto;
}

.tilt-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--pale-champagne);
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease), transform 600ms var(--morph-ease);
}

.tilt-heading.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

.tilt-body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    line-height: 1.65;
    letter-spacing: 0.005em;
    color: var(--honey-cream);
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease) 200ms, transform 600ms var(--morph-ease) 200ms;
}

.tilt-body.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

.tilt-date {
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease) 400ms, transform 600ms var(--morph-ease) 400ms;
}

.tilt-date.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

.diagonal-accent-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

/* ================================================
   SECTION 2: THE CITYSCAPE
   ================================================ */
.section-cityscape {
    min-height: 120vh;
    background: var(--deep-twilight);
    position: relative;
    clip-path: polygon(0% 15%, 100% 0%, 100% 100%, 0% 85%);
    z-index: 3;
    margin-top: -8vh;
}

.city-text-band {
    position: relative;
    z-index: 10;
    max-width: 600px;
    padding: 3rem 2rem;
}

.band-positive {
    transform: rotate(var(--diagonal-angle));
    margin: 8vh auto 0 10%;
}

.band-negative {
    transform: rotate(var(--diagonal-angle-neg));
    margin: 4vh 10% 0 auto;
}

.city-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--warm-amber);
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1rem;
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease), transform 600ms var(--morph-ease);
}

.city-heading.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

.city-body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    line-height: 1.65;
    letter-spacing: 0.005em;
    color: var(--gilded-haze);
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease) 200ms, transform 600ms var(--morph-ease) 200ms;
}

.city-body.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

/* Cityscape */
.cityscape-container {
    position: absolute;
    bottom: 0;
    left: -10%;
    width: 120%;
    height: 300px;
    display: flex;
    align-items: flex-end;
    gap: 4px;
    transform: rotate(var(--diagonal-angle));
    transform-origin: bottom center;
    z-index: 5;
}

.building {
    flex-shrink: 0;
    position: relative;
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 400ms var(--morph-ease);
}

.building.built {
    transform: scaleY(1);
}

.building-window {
    position: absolute;
    width: 6px;
    height: 8px;
    background: var(--warm-amber);
    opacity: 0;
    transition: opacity 200ms ease-out;
}

.building-window.lit {
    opacity: 0.4;
}

/* ================================================
   SECTION 3: THE REFLECTION
   ================================================ */
.section-reflection {
    min-height: 100vh;
    position: relative;
    clip-path: polygon(0% 15%, 100% 0%, 100% 85%, 0% 100%);
    z-index: 2;
    margin-top: -8vh;
}

.reflection-stripes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    z-index: 0;
}

.stripe {
    height: 100%;
}

.stripe-1 {
    width: 30%;
    background: var(--gilded-haze);
    transform: skewX(-12deg);
    transform-origin: top left;
    margin-left: -5%;
}

.stripe-2 {
    width: 40%;
    background: var(--dusty-mauve);
    transform: skewX(-12deg);
}

.stripe-3 {
    width: 35%;
    background: var(--evening-plum);
    transform: skewX(-12deg);
}

.inverted-cityscape-container {
    position: absolute;
    top: 0;
    left: -10%;
    width: 120%;
    height: 250px;
    display: flex;
    align-items: flex-start;
    gap: 4px;
    transform: rotate(var(--diagonal-angle-neg)) scaleY(-1);
    transform-origin: top center;
    z-index: 5;
}

.reflection-content {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 4rem 2rem;
    max-width: 650px;
    margin: 0 auto;
    text-align: center;
}

.reflection-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--deep-twilight);
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease), transform 600ms var(--morph-ease);
}

.reflection-heading.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

.reflection-body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    line-height: 1.65;
    letter-spacing: 0.005em;
    color: var(--evening-plum);
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease) 200ms, transform 600ms var(--morph-ease) 200ms;
}

.reflection-body.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

.reflection-date {
    color: var(--evening-plum);
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease) 400ms, transform 600ms var(--morph-ease) 400ms;
}

.reflection-date.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

/* ================================================
   SECTION 4: THE EXIT
   ================================================ */
.section-exit {
    min-height: 80vh;
    background: var(--deep-twilight);
    position: relative;
    clip-path: polygon(0% 15%, 100% 0%, 100% 100%, 0% 100%);
    z-index: 1;
    margin-top: -8vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.convergence-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.convergence-line {
    position: absolute;
    width: 1px;
    background: var(--dusty-mauve);
    opacity: 0.3;
    transform-origin: center center;
    transition: transform 800ms var(--morph-ease), opacity 800ms ease-out;
}

.exit-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 4rem 2rem;
    transform: rotate(-2deg);
}

.exit-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(4rem, 12vw, 10rem);
    color: var(--warm-amber);
    letter-spacing: -0.03em;
    line-height: 0.92;
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease), transform 600ms var(--morph-ease);
}

.exit-heading.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

.exit-body {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    line-height: 1.65;
    letter-spacing: 0.005em;
    color: var(--gilded-haze);
    margin-bottom: 1rem;
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease) 200ms, transform 600ms var(--morph-ease) 200ms;
}

.exit-body.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

.exit-date {
    color: var(--dusty-mauve);
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease) 400ms, transform 600ms var(--morph-ease) 400ms;
}

.exit-date.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

/* ================================================
   INTERACTIVE TEXT HOVER EFFECTS
   ================================================ */
.interactive-text {
    cursor: default;
    position: relative;
    display: inline-block;
    transition: letter-spacing 200ms ease-out;
}

.interactive-text::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--warm-amber);
    transform: scaleX(0) rotate(12deg);
    transform-origin: left center;
    transition: transform 300ms var(--morph-ease);
}

.interactive-text:hover {
    letter-spacing: 0.1em;
}

.interactive-text:hover::after {
    transform: scaleX(1) rotate(12deg);
}

.interactive-text:active {
    transform: skewX(-5deg);
    transition: transform 75ms ease-out;
}

.hover-bokeh {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    opacity: 0.15;
    animation: bokehPulse 1.2s ease-in-out infinite alternate;
}

@keyframes bokehPulse {
    0% { transform: scale(0.9); }
    100% { transform: scale(1.1); }
}

/* ================================================
   MORPH UTILITY
   ================================================ */
.morph-target {
    opacity: 0;
    transform: scaleY(0.05) skewX(15deg);
    transition: opacity 600ms var(--morph-ease), transform 600ms var(--morph-ease);
}

.morph-target.morph-in {
    opacity: 1;
    transform: scaleY(1) skewX(0deg);
}

/* ================================================
   FAN-OUT ANIMATION FOR EXIT
   ================================================ */
@keyframes fanOut {
    0% {
        transform: rotate(var(--line-angle)) scaleY(1);
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
    100% {
        transform: rotate(var(--fan-angle)) scaleY(1.5);
        opacity: 0.1;
    }
}

.convergence-line.fan-out {
    animation: fanOut 1200ms var(--morph-ease) forwards;
}