/* ========================================
   星野アイラ – Official Website
   style.css
   ======================================== */

/* ── RESET & BASE ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg:           #06060e;
    --bg-2:         #0c0c1c;
    --bg-3:         #111128;
    --text:         #f0ecf8;
    --text-soft:    #d0ccec;
    --text-muted:   #9c96c0;
    --accent:       #b8a0d4;
    --accent-warm:  #d4a8c0;
    --gold:         #c8a87a;
    --border:       rgba(184, 160, 212, 0.1);
    --border-warm:  rgba(212, 168, 192, 0.2);

    --font-serif-ja: 'Noto Serif JP', serif;
    --font-sans-ja:  'Noto Sans JP', sans-serif;
    --font-en:       'Cormorant Garamond', serif;

    --section-max: 860px;
    --nav-height: 64px;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-serif-ja);
    font-weight: 300;
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
#nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    height: var(--nav-height);
    padding: 0 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(6, 6, 14, 0.75);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    transition: border-color 0.4s ease;
}

#nav.scrolled {
    border-bottom-color: rgba(184, 160, 212, 0.18);
}

.nav-logo {
    font-family: var(--font-serif-ja);
    font-weight: 300;
    font-size: 1rem;
    letter-spacing: 0.12em;
    color: var(--text-soft);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-logo:hover {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-family: var(--font-sans-ja);
    font-weight: 200;
    font-size: 0.65rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent);
}

/* Hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 1px;
    background: var(--text-muted);
    transition: all 0.3s ease;
}

/* ── HERO ── */
#hero {
    position: relative;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding: calc(var(--nav-height) + 2rem) 2rem 5rem;
}

#hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.hero-glow {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(ellipse at center,
        rgba(184, 160, 212, 0.07) 0%,
        rgba(212, 168, 192, 0.04) 40%,
        transparent 70%
    );
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-label {
    font-family: var(--font-sans-ja);
    font-weight: 100;
    font-size: 0.6rem;
    letter-spacing: 0.5em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: fadeUp 1s ease forwards 0.4s;
}

.hero-name-ja {
    font-family: var(--font-serif-ja);
    font-weight: 200;
    font-size: clamp(3.5rem, 12vw, 9rem);
    letter-spacing: 0.12em;
    color: var(--text);
    line-height: 1;
    margin-bottom: 0.6rem;
    opacity: 0;
    animation: fadeUp 1.2s ease forwards 0.6s;
}

.hero-name-en {
    font-family: var(--font-en);
    font-weight: 300;
    font-style: italic;
    font-size: clamp(1.1rem, 3vw, 1.9rem);
    letter-spacing: 0.35em;
    color: var(--text-muted);
    margin-bottom: 3rem;
    opacity: 0;
    animation: fadeUp 1.2s ease forwards 0.8s;
}

.hero-tagline {
    font-family: var(--font-serif-ja);
    font-weight: 300;
    font-size: clamp(1rem, 2.5vw, 1.35rem);
    letter-spacing: 0.25em;
    color: var(--text-soft);
    margin-bottom: 4.5rem;
    opacity: 0;
    animation: fadeUp 1.2s ease forwards 1s;
}

.hero-single {
    opacity: 0;
    animation: fadeUp 1.2s ease forwards 1.2s;
}

.single-label {
    font-family: var(--font-sans-ja);
    font-weight: 100;
    font-size: 0.6rem;
    letter-spacing: 0.5em;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 0.6rem;
}

.single-title {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: clamp(1.3rem, 3.5vw, 2.2rem);
    letter-spacing: 0.08em;
    color: var(--accent-warm);
    margin-bottom: 1.8rem;
}

/* ── STREAM BUTTON ── */
.stream-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.8rem 2.2rem;
    border: 1px solid var(--accent);
    color: var(--accent);
    text-decoration: none;
    font-family: var(--font-sans-ja);
    font-weight: 200;
    font-size: 0.65rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    transition: color 0.4s ease;
}

.stream-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent);
    transform: translateX(-101%);
    transition: transform 0.4s ease;
    z-index: -1;
}

.stream-btn:hover {
    color: var(--bg);
}

.stream-btn:hover::after {
    transform: translateX(0);
}

.stream-btn--card {
    margin-top: 0.5rem;
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    opacity: 0;
    animation: fadeIn 1s ease forwards 2.2s;
}

.scroll-indicator span {
    font-family: var(--font-sans-ja);
    font-size: 0.5rem;
    letter-spacing: 0.5em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 44px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: pulseDown 2s ease infinite;
}

/* ── SECTIONS ── */
section {
    padding: 7rem 2rem;
}

.section-inner {
    max-width: var(--section-max);
    margin: 0 auto;
}

.section-inner--center {
    text-align: center;
}

.section-label {
    font-family: var(--font-sans-ja);
    font-weight: 200;
    font-size: 0.58rem;
    letter-spacing: 0.55em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 0.9rem;
}

.section-rule {
    width: 36px;
    height: 1px;
    background: var(--accent);
    opacity: 0.35;
    margin-bottom: 3.5rem;
}

.section-rule--center {
    margin-left: auto;
    margin-right: auto;
}

/* ── HERO BG IMAGE ── */
.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
    opacity: 0.2;
    filter: grayscale(25%);
    transform: scale(1.04); /* prevents edge bleed if blur is added later */
}

/* ── PHOTO FRAME (shared placeholder shell) ── */
.photo-frame {
    display: block;
    margin: 0;
    overflow: hidden;
    background: linear-gradient(150deg, var(--bg-2) 0%, var(--bg-3) 100%);
    border: 1px solid var(--border);
    position: relative;
}

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

.photo-frame img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.photo-frame:hover img {
    transform: scale(1.04);
}

/* ── ABOUT ── */
.about-body {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 4rem;
    align-items: start;
}

.about-photo {
    position: sticky;
    top: calc(var(--nav-height) + 2rem);
}

.about-copy {
    min-width: 0; /* prevent grid blowout */
}

.about-lead {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: clamp(1.15rem, 2.5vw, 1.5rem);
    color: var(--text);
    line-height: 2;
    letter-spacing: 0.05em;
    margin-bottom: 3rem;
}

.about-text {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: 0.98rem;
    color: var(--text-soft);
    line-height: 2.3;
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-debut {
    color: var(--text);
    padding-left: 1.2rem;
    border-left: 2px solid var(--accent-warm);
}

.about-closing {
    color: var(--text-muted) !important;
    letter-spacing: 0.15em;
    font-size: 0.9rem !important;
    margin-top: 1rem;
}

/* ── GALLERY ── */
.section-inner--wide {
    max-width: 1100px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 0.5rem;
}

/* Tall left item: spans both rows */
.gallery-item--tall {
    grid-row: 1 / 3;
    aspect-ratio: 2 / 3;
}

/* Default items (top-right and bottom-right) */
.gallery-item {
    overflow: hidden;
    aspect-ratio: 4 / 3;
}

/* Wide bottom item: spans full width */
.gallery-item--wide {
    grid-column: 1 / -1;
    aspect-ratio: 16 / 6;
}

.gallery-item--wide img {
    object-position: center 15%;
}

/* Second row: 5-column equal grid */
.gallery-grid--row2 {
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: auto;
    margin-top: 0.5rem;
}

.gallery-grid--row2 .gallery-item {
    aspect-ratio: 3 / 4;
}

/* Placeholder state: subtle inner pulse border */
.gallery-item--placeholder::after {
    content: '';
    position: absolute;
    inset: 1px;
    border: 1px dashed rgba(184, 160, 212, 0.08);
    pointer-events: none;
}

.gallery-note {
    text-align: center;
    font-family: var(--font-sans-ja);
    font-weight: 200;
    font-size: 0.58rem;
    letter-spacing: 0.45em;
    color: var(--text-muted);
    opacity: 0.45;
    margin-top: 1.5rem;
    text-transform: uppercase;
}

/* ── MUSIC ── */
.music-card {
    position: relative;
    border: 1px solid var(--border);
    background: var(--bg-2);
    overflow: hidden;
}

.music-card-glow {
    position: absolute;
    top: -60px;
    right: -60px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(ellipse,
        rgba(184, 160, 212, 0.08) 0%,
        transparent 65%
    );
    pointer-events: none;
}

.music-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent,
        var(--accent),
        transparent
    );
    opacity: 0.4;
}

.music-card-inner {
    position: relative;
    padding: 3.5rem;
    z-index: 1;
}

.music-badge {
    font-family: var(--font-sans-ja);
    font-weight: 100;
    font-size: 0.6rem;
    letter-spacing: 0.5em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 1.2rem;
}

.music-title {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: clamp(1.8rem, 5vw, 3rem);
    letter-spacing: 0.06em;
    color: var(--text);
    margin-bottom: 0.4rem;
}

.music-release {
    font-family: var(--font-en);
    font-weight: 300;
    font-style: italic;
    font-size: 0.95rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.music-theme {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: 0.95rem;
    color: var(--text-soft);
    line-height: 1.9;
    padding: 1rem 1.5rem;
    border-left: 2px solid var(--accent);
    margin-bottom: 1.8rem;
}

.music-credits {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-family: var(--font-sans-ja);
    font-weight: 200;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.lyrics-excerpt {
    position: relative;
    background: var(--bg-3);
    padding: 2.5rem 2rem 2rem;
    margin-bottom: 2.5rem;
    border-left: 1px solid var(--border-warm);
}

.lyrics-mark {
    position: absolute;
    top: 0.2rem;
    left: 1.2rem;
    font-family: var(--font-en);
    font-size: 4.5rem;
    line-height: 1;
    color: var(--accent-warm);
    opacity: 0.25;
    pointer-events: none;
}

.lyrics-text {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: 1rem;
    color: var(--text-soft);
    line-height: 2.8;
    text-align: center;
}

/* ── SPOTIFY EMBED ── */
.spotify-embed {
    margin: 0 0 2.5rem;
    overflow: hidden;
}

.spotify-embed iframe {
    display: block;
}

/* ── PLATFORM LINKS ── */
.platform-links {
    border-top: 1px solid var(--border);
    padding-top: 2rem;
}

.platform-label {
    font-family: var(--font-sans-ja);
    font-weight: 200;
    font-size: 0.58rem;
    letter-spacing: 0.5em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 1.2rem;
}

.platform-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.platform-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.6rem 1.3rem;
    border: 1px solid var(--border);
    color: var(--text-muted);
    text-decoration: none;
    font-family: var(--font-sans-ja);
    font-weight: 200;
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    transition: color 0.3s ease, border-color 0.3s ease;
}

.platform-btn:hover {
    color: var(--text);
    border-color: rgba(184, 160, 212, 0.35);
}

.platform-dot {
    display: block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--brand, var(--accent));
    opacity: 0.45;
    flex-shrink: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.platform-btn:hover .platform-dot {
    opacity: 1;
    transform: scale(1.4);
}

/* ── PROFILE ── */
.profile-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border: 1px solid var(--border);
}

.profile-item {
    padding: 1.6rem 2rem;
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
    transition: background 0.3s ease;
}

.profile-item:hover {
    background: rgba(184, 160, 212, 0.03);
}

/* Right column: no right border */
.profile-item:nth-child(2n) {
    border-right: none;
}

/* Last row: no bottom border.
   With 9 items in 2 cols, items 8 & 9 are the last row.
   Item 9 spans full width so item 8 (even) is last in its column. */
.profile-item:nth-last-child(-n+2) {
    border-bottom: none;
}

/* 9th item: lone at the end → full width */
.profile-item--wide {
    grid-column: 1 / -1;
    border-right: none;
    border-bottom: none;
}

.profile-key {
    font-family: var(--font-sans-ja);
    font-weight: 200;
    font-size: 0.58rem;
    letter-spacing: 0.45em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.profile-value {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: 0.95rem;
    color: var(--text-soft);
    letter-spacing: 0.04em;
}

/* ── NEWS ── */
.news-list {
    list-style: none;
    border-top: 1px solid var(--border);
}

.news-item {
    display: flex;
    align-items: baseline;
    gap: 2.5rem;
    padding: 1.8rem 0;
    border-bottom: 1px solid var(--border);
    transition: padding-left 0.3s ease;
}

.news-item:hover {
    padding-left: 0.5rem;
}

.news-date {
    font-family: var(--font-en);
    font-weight: 300;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    color: var(--accent);
    min-width: 72px;
    flex-shrink: 0;
}

.news-text {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: 0.95rem;
    color: var(--text-soft);
    line-height: 1.7;
}

/* ── LIVE ── */
.live-placeholder {
    border: 1px dashed rgba(184, 160, 212, 0.15);
    padding: 4.5rem 3rem;
    text-align: center;
}

.live-placeholder p {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 2.2;
}

/* ── MESSAGE ── */
.message-text {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: var(--text-soft);
    line-height: 3;
    margin-bottom: 3rem;
}

.message-signature {
    font-family: var(--font-serif-ja);
    font-weight: 400;
    font-size: 1.1rem;
    letter-spacing: 0.2em;
    color: var(--accent);
}

/* ── CONTACT ── */
.contact-email {
    display: inline-block;
    font-family: var(--font-en);
    font-style: italic;
    font-size: 1.3rem;
    letter-spacing: 0.08em;
    color: var(--accent-warm);
    text-decoration: none;
    margin-bottom: 1.2rem;
    transition: color 0.3s ease;
    border-bottom: 1px solid transparent;
}

.contact-email:hover {
    color: var(--text);
    border-bottom-color: var(--accent-warm);
}

.contact-note {
    font-family: var(--font-sans-ja);
    font-weight: 200;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    line-height: 2;
}

/* ── FOOTER ── */
footer {
    border-top: 1px solid var(--border);
    padding: 3.5rem 2rem;
    text-align: center;
}

.footer-name {
    font-family: var(--font-serif-ja);
    font-weight: 200;
    font-size: 1.5rem;
    letter-spacing: 0.25em;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.footer-copy {
    font-family: var(--font-sans-ja);
    font-weight: 100;
    font-size: 0.55rem;
    letter-spacing: 0.4em;
    color: var(--text-muted);
    opacity: 0.4;
}

/* ── FADE-IN ON SCROLL ── */
.fade-in {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.9s ease, transform 0.9s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── KEYFRAMES ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes pulseDown {
    0%, 100% { opacity: 0.25; transform: scaleY(0.8); }
    50%       { opacity: 1;    transform: scaleY(1); }
}

/* ── RESPONSIVE ── */
@media (max-width: 680px) {
    #nav {
        padding: 0 1.5rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: center;
        gap: 0;
        background: rgba(6, 6, 14, 0.97);
        border-bottom: 1px solid var(--border);
        padding: 1rem 0 1.5rem;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-links a {
        display: block;
        padding: 0.9rem 0;
    }

    .nav-toggle {
        display: flex;
    }

    section {
        padding: 5rem 1.5rem;
    }

    /* About: stack vertically on mobile */
    .about-body {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-photo {
        position: static;
        max-width: 200px;
    }

    /* Gallery: single column on mobile */
    .gallery-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .gallery-item--tall {
        grid-row: auto;
        aspect-ratio: 3 / 4;
    }

    .gallery-item--wide {
        grid-column: auto;
        aspect-ratio: 3 / 2;
    }

    .gallery-grid--row2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-grid--row2 .gallery-item:last-child {
        grid-column: 1 / -1;
        aspect-ratio: 3 / 2;
    }

    .music-card-inner {
        padding: 2rem 1.5rem;
    }

    .profile-grid {
        grid-template-columns: 1fr;
    }

    .profile-item {
        border-right: none;
    }

    .profile-item:nth-child(2n) {
        border-right: none;
    }

    .profile-item--wide {
        border-bottom: none;
    }

    .profile-item:nth-last-child(-n+2) {
        border-bottom: 1px solid var(--border);
    }

    .profile-item:last-child {
        border-bottom: none;
    }

    .news-item {
        flex-direction: column;
        gap: 0.4rem;
    }

    .hero-glow {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 400px) {
    .hero-name-ja {
        letter-spacing: 0.06em;
    }
}