/* ================================================================
   shinonome.stream — styles.css
   Palette: #C1440E #E8825A #F5C89A #FBF2E8 #2C1A0E #8B4A2F #D4A574 #F9EDD8
   Fonts: DM Sans, Noto Serif JP, Space Grotesk
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;600&family=Noto+Serif+JP:wght@300&family=Space+Grotesk:wght@400&display=swap');

/* ----------------------------------------------------------------
   CSS Custom Properties
   ---------------------------------------------------------------- */
:root {
    --terracotta:    #C1440E;
    --coral:         #E8825A;
    --peach:         #F5C89A;
    --paper:         #FBF2E8;
    --espresso:      #2C1A0E;
    --sienna:        #8B4A2F;
    --sand:          #D4A574;
    --washi:         #F9EDD8;

    --font-heading:  'DM Sans', sans-serif;
    --font-jp:       'Noto Serif JP', serif;
    --font-ui:       'Space Grotesk', sans-serif;

    --cx: 50%;
    --cy: 50%;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--paper);
    color: var(--espresso);
    font-family: var(--font-heading);
    font-weight: 300;
    line-height: 1.6;
    overflow-x: hidden;
    cursor: none;
}

/* ----------------------------------------------------------------
   Cursor Glow (watercolor ripple metaphor)
   ---------------------------------------------------------------- */
.cursor-glow {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    background: radial-gradient(circle 30px at var(--cx) var(--cy), rgba(232, 130, 90, 0.18), transparent);
    transition: background 200ms ease-out;
}

/* ----------------------------------------------------------------
   Navigation
   ---------------------------------------------------------------- */
#navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(251, 242, 232, 0.72);
    backdrop-filter: blur(12px) saturate(1.4);
    -webkit-backdrop-filter: blur(12px) saturate(1.4);
    border-bottom: 1px solid rgba(212, 165, 116, 0.25);
}

.nav-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-wordmark {
    display: flex;
    align-items: baseline;
    gap: 0.6em;
    text-decoration: none;
}

.wordmark-jp {
    font-family: var(--font-jp);
    font-weight: 300;
    font-size: 1.2rem;
    color: var(--terracotta);
    letter-spacing: 0.02em;
}

.wordmark-en {
    font-family: var(--font-ui);
    font-weight: 400;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sienna);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.8rem;
}

.nav-link {
    font-family: var(--font-ui);
    font-weight: 400;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sienna);
    text-decoration: none;
    transition: color 250ms ease;
}

.nav-link:hover {
    color: var(--terracotta);
}

.nav-icon {
    display: flex;
    align-items: center;
}

/* ----------------------------------------------------------------
   Zone 1: Dawn Portal (Hero)
   ---------------------------------------------------------------- */
#hero {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--paper);
}

/* Mon watermark */
.mon-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    animation: monFadeIn 2.4s 0.6s ease-out forwards;
    pointer-events: none;
    z-index: 1;
}

@keyframes monFadeIn {
    to { opacity: 1; }
}

/* Watercolor wash */
.hero-watercolor {
    position: absolute;
    inset: 0;
    opacity: 0;
    animation: wcFadeIn 1.8s 0.2s ease-out forwards;
    pointer-events: none;
    z-index: 0;
}

.wc-bg-svg {
    width: 100%;
    height: 100%;
}

@keyframes wcFadeIn {
    to { opacity: 1; }
}

/* Scanlines */
.scanlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    background-image: repeating-linear-gradient(
        to bottom,
        rgba(193, 68, 14, 0.03) 0px,
        rgba(193, 68, 14, 0.03) 2px,
        transparent 2px,
        transparent 4px
    );
    animation: scanlinePulse 4s sine infinite;
}

@keyframes scanlinePulse {
    0%, 100% { opacity: 0.03; }
    50%       { opacity: 0.06; }
}

/* Hero content */
.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 2rem;
}

.hero-wordmark {
    margin-bottom: 1.5rem;
}

.hero-kanji {
    font-family: var(--font-jp);
    font-weight: 300;
    font-size: clamp(3rem, 8vw, 6rem);
    color: var(--terracotta);
    letter-spacing: 0.1em;
    line-height: 1.1;
    opacity: 0;
    animation: fadeUp 1.0s 0.8s ease-out forwards;
}

.hero-domain {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: clamp(2rem, 5vw, 4.5rem);
    color: var(--espresso);
    letter-spacing: -0.03em;
    line-height: 1.1;
    opacity: 0;
    animation: fadeUp 1.0s 1.1s ease-out forwards;
}

.hero-tagline {
    font-family: var(--font-ui);
    font-weight: 400;
    font-size: 1.1rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--terracotta);
    min-height: 1.6em;
    opacity: 0;
    animation: fadeIn 0.4s 1.6s ease-out forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    to { opacity: 1; }
}

/* Perspective grid */
.perspective-grid {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2;
    animation: gridDrift 8s ease-in-out infinite;
}

.perspective-grid svg {
    display: block;
    width: 100%;
}

@keyframes gridDrift {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-8px); }
}

/* ----------------------------------------------------------------
   Ink Dividers
   ---------------------------------------------------------------- */
.ink-divider {
    width: 100%;
    height: 24px;
    padding: 0;
    margin: 0.5rem 0;
}

.ink-divider svg {
    display: block;
    width: 100%;
    height: 100%;
}

/* ----------------------------------------------------------------
   Zone 2: Stream Grid (Content)
   ---------------------------------------------------------------- */
#stream {
    max-width: 1280px;
    margin: 0 auto;
    padding: 4rem 2rem 5rem;
}

.stream-header {
    text-align: center;
    margin-bottom: 3rem;
}

.stream-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 2.5rem;
    letter-spacing: -0.03em;
    color: var(--espresso);
    margin-bottom: 0.4rem;
}

.stream-subtitle {
    font-family: var(--font-jp);
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--sienna);
    letter-spacing: 0.04em;
}

/* Card Grid — 3 column masonry-like layout */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: auto;
    gap: 1.5rem;
    align-items: start;
}

/* ----------------------------------------------------------------
   Cards
   ---------------------------------------------------------------- */
.card {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    cursor: none;
    border: 1px solid rgba(193, 68, 14, 0.15);
    transition: transform 400ms cubic-bezier(0.23, 1, 0.32, 1),
                box-shadow 400ms cubic-bezier(0.23, 1, 0.32, 1),
                filter 400ms ease;
    transform-style: preserve-3d;
    will-change: transform;
    /* Stagger reveal: set in JS via --delay */
    opacity: 0;
    transform: translateY(30px);
}

.card.card-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 600ms ease-out, transform 600ms ease-out,
                box-shadow 400ms cubic-bezier(0.23, 1, 0.32, 1),
                filter 400ms ease;
}

.card:hover {
    transform: translateY(-6px) perspective(800px);
    box-shadow: 0 20px 60px rgba(44, 26, 14, 0.25);
    filter: hue-rotate(15deg);
}

/* Portrait 2:3 */
.card-portrait {
    aspect-ratio: 2 / 3;
}

/* Landscape 16:9 — spans 2 columns */
.card-landscape {
    grid-column: span 2;
    aspect-ratio: 16 / 9;
}

/* Watercolor background */
.card-wc-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.card-wc-bg svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Kikkō (tortoiseshell hex) corner decoration */
.card-kikko {
    position: absolute;
    inset: 0;
    z-index: 1;
    background-image:
        repeating-linear-gradient(
            60deg,
            rgba(193, 68, 14, 0.08) 0px,
            rgba(193, 68, 14, 0.08) 1px,
            transparent 1px,
            transparent 14px
        ),
        repeating-linear-gradient(
            -60deg,
            rgba(193, 68, 14, 0.08) 0px,
            rgba(193, 68, 14, 0.08) 1px,
            transparent 1px,
            transparent 14px
        ),
        repeating-linear-gradient(
            0deg,
            rgba(193, 68, 14, 0.08) 0px,
            rgba(193, 68, 14, 0.08) 1px,
            transparent 1px,
            transparent 14px
        );
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0.08) 0%, transparent 30%);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.08) 0%, transparent 30%);
    pointer-events: none;
}

/* Sunrise gradient overlay at card bottom */
.card-gradient {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 55%;
    background: linear-gradient(
        to top,
        rgba(44, 26, 14, 0.65) 0%,
        rgba(193, 68, 14, 0.15) 50%,
        transparent 100%
    );
    z-index: 2;
    pointer-events: none;
}

/* Card content */
.card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.4rem 1.2rem 1.2rem;
    z-index: 3;
}

.card-tag {
    display: inline-block;
    font-family: var(--font-ui);
    font-weight: 400;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--peach);
    background: rgba(193, 68, 14, 0.35);
    padding: 0.2em 0.6em;
    border-radius: 2px;
    margin-bottom: 0.5rem;
}

.card-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: -0.01em;
    color: var(--washi);
    line-height: 1.35;
    margin-bottom: 0.4rem;
}

.card-landscape .card-title {
    font-size: 1.2rem;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 0.6em;
}

.card-jp {
    font-family: var(--font-jp);
    font-weight: 300;
    font-size: 0.75rem;
    color: rgba(245, 200, 154, 0.7);
    line-height: 1.9;
}

/* ----------------------------------------------------------------
   Zone 3: Footer
   ---------------------------------------------------------------- */
footer {
    padding: 4rem 2rem 5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.6rem;
    background-color: var(--paper);
}

.footer-sunrise {
    display: flex;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.sunrise-rotate {
    display: block;
    animation: sunriseRotate 60s linear infinite;
    transform-origin: center;
}

@keyframes sunriseRotate {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.footer-haiku {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.haiku-line {
    font-family: var(--font-jp);
    font-weight: 300;
    font-size: 1rem;
    color: var(--sienna);
    line-height: 1.9;
    letter-spacing: 0.05em;
}

.footer-domain {
    font-family: var(--font-ui);
    font-weight: 400;
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--sand);
}

.footer-social {
    color: var(--sienna);
    display: flex;
    align-items: center;
    transition: color 250ms ease;
}

.footer-social:hover {
    color: var(--terracotta);
}

/* ----------------------------------------------------------------
   Responsive
   ---------------------------------------------------------------- */
@media (max-width: 900px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .card-landscape {
        grid-column: span 2;
    }

    .hero-domain {
        font-size: clamp(1.6rem, 6vw, 3rem);
    }
}

@media (max-width: 580px) {
    .card-grid {
        grid-template-columns: 1fr;
    }

    .card-landscape {
        grid-column: span 1;
        aspect-ratio: 16 / 9;
    }

    .card-portrait {
        aspect-ratio: 3 / 2;
    }

    .nav-inner {
        padding: 0 1rem;
    }

    .wordmark-en {
        display: none;
    }
}