/* ============================================
   DareZ — Neo-Brutalist Pop Art System v2
   ============================================ */

:root {
    --yellow: #E6FF00;
    --cyan: #00F5FF;
    --magenta: #FF0055;
    --mint: #7DFFC3;
    --hot-pink: #FF2D78;
    --electric-blue: #1469FF;
    --orange: #FF5100;
    --bg: #EFEFE9;
    --ink: #0A0A0A;
    --white: #FFFFFF;
    --border: 3px;
    --shadow: 6px;
    --r: 4px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Space Grotesk', 'Noto Sans TC', sans-serif;
    background-color: var(--bg);
    background-image: radial-gradient(var(--ink) 1px, transparent 1px);
    background-size: 24px 24px;
    color: var(--ink);
    overflow-x: hidden;
    line-height: 1.6;
}

.tc { display: none; }

/* ── Brutalist Base ────────────────────────── */
.brutal-box {
    border: var(--border) solid var(--ink);
    box-shadow: 8px 8px 0px var(--ink);
    background-color: white;
    padding: 2rem;
    transition: transform 0.15s, box-shadow 0.15s;
}
.brutal-box:hover {
    transform: translate(-3px, -3px);
    box-shadow: 11px 11px 0px var(--ink);
}

.box-yellow { background-color: var(--yellow); }
.box-cyan   { background-color: var(--cyan); }

.brutal-btn {
    display: inline-block;
    font-family: inherit;
    font-weight: 900;
    font-size: clamp(1rem, 2vw, 1.4rem);
    text-transform: uppercase;
    text-decoration: none;
    color: var(--ink);
    background: var(--yellow);
    border: var(--border) solid var(--ink);
    box-shadow: var(--shadow) var(--shadow) 0 var(--ink);
    padding: 1rem 2.5rem;
    cursor: pointer;
    transition: all 0.1s cubic-bezier(0.4,0,0.2,1);
    letter-spacing: 1px;
    border-radius: var(--r);
}
.brutal-btn:hover { background: var(--cyan); }
.brutal-btn:active {
    transform: translate(4px, 4px);
    box-shadow: 2px 2px 0 var(--ink);
}

/* ── Navigation ─────────────────────────── */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 4vw;
    background: var(--bg);
    border-bottom: var(--border) solid var(--ink);
    position: sticky;
    top: 0;
    z-index: 100;
}
.logo-nav {
    font-size: 1.8rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    text-transform: uppercase;
}
.logo-sub {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0;
    background: linear-gradient(120deg, #c0c0c0 0%, #ffffff 35%, #a8a8a8 55%, #e8e8e8 75%, #b0b0b0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: chrome-shine 3s linear infinite;
}
@keyframes chrome-shine {
    0%   { background-position: 0% center; }
    100% { background-position: 200% center; }
}
.lang-switch button {
    background: transparent;
    border: 2px solid var(--ink);
    font-family: inherit;
    font-weight: 700;
    cursor: pointer;
    padding: 0.4rem 1rem;
    margin-left: 0.5rem;
    transition: all 0.15s;
    font-size: 0.85rem;
    border-radius: var(--r);
}
.lang-switch button.active {
    background: var(--ink);
    color: var(--yellow);
}
.lang-switch button:active { opacity: 0.7; }

/* ── Marquee Ticker ─────────────────────── */
.marquee {
    background: var(--cyan);
    color: var(--ink);
    border-bottom: var(--border) solid var(--ink);
    padding: 0.7rem 0;
    font-weight: 900;
    font-size: 1rem;
    white-space: nowrap;
    overflow: hidden;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.marquee-inner {
    display: inline-block;
    animation: ticker 28s linear infinite;
}
@keyframes ticker {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ── Hero ──────────────────────────────── */
header {
    text-align: center;
    padding: 8rem 4vw 6rem;
    background: var(--hot-pink);
    background-image:
        radial-gradient(rgba(0,0,0,0.12) 1px, transparent 1px);
    background-size: 20px 20px;
    border-bottom: var(--border) solid var(--ink);
    position: relative;
    overflow: hidden;
}
header::before {
    content: "DZ";
    position: absolute;
    font-size: 45vw;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 3px rgba(255,255,255,0.12);
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    line-height: 1;
    z-index: 0;
}
header::after {
    content: "✦";
    position: absolute;
    bottom: 2rem;
    right: 3rem;
    font-size: 2.5rem;
    color: rgba(255,255,255,0.5);
    pointer-events: none;
    z-index: 1;
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}
.hero-badge {
    display: inline-block;
    background: var(--mint);
    color: var(--ink);
    font-weight: 900;
    font-size: 1rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--ink);
    border-radius: 50px;
    transform: rotate(-2deg);
    margin-bottom: 2rem;
    box-shadow: 3px 3px 0 var(--ink);
}
h1 {
    font-size: clamp(3.5rem, 10vw, 8rem);
    line-height: 0.9;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--mint);
    -webkit-text-stroke: 2px var(--ink);
    /* 3D block extrusion — mirrors the isometric logo lettering */
    text-shadow:
        1px 1px 0 #45CCA0,
        2px 2px 0 #35BB90,
        3px 3px 0 #25AA80,
        4px 4px 0 #159870,
        5px 5px 0 #058560,
        6px 6px 0 var(--ink),
        7px 7px 0 var(--ink),
        8px 8px 0 var(--ink);
    display: block;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
}
.hero-tagline {
    font-size: clamp(1rem, 2vw, 1.3rem);
    font-weight: 700;
    max-width: 640px;
    margin: 0 auto 2.5rem;
    background: var(--ink);
    color: var(--mint);
    padding: 0.5rem 1.2rem;
    display: inline-block;
    border-radius: var(--r);
}
.hero-meta {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}
.meta-pill {
    background: rgba(255,255,255,0.15);
    border: 2px solid rgba(255,255,255,0.7);
    padding: 0.4rem 1rem;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: white;
    border-radius: var(--r);
    backdrop-filter: blur(4px);
}
.hero-cta {
    margin-top: 0.5rem;
    background: var(--mint);
    color: var(--ink);
}
.hero-cta:hover {
    background: var(--yellow);
}

/* ── Section Titles ─────────────────────── */
.section-title {
    font-size: clamp(1.4rem, 2.5vw, 1.9rem);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    margin-bottom: 1.2rem;
    display: block;
}
.section-title-lg {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: 3rem;
    display: block;
}

/* ── Layout ─────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 4vw; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 1.5rem; }

/* ── About Section ───────────────────────── */
.section-about {
    background: var(--white);
    border-bottom: var(--border) solid var(--ink);
    padding: 5rem 4vw;
}
.brutal-box {
    border: var(--border) solid var(--ink);
    box-shadow: 10px 10px 0 var(--ink);
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: var(--r);
    transition: transform 0.2s ease;
}
.brutal-box:hover { transform: translateY(-5px); }
.lead {
    font-size: 1.1rem;
    font-weight: 500;
    line-height: 1.7;
    margin-bottom: 1rem;
}
.sdg-badge {
    display: inline-block;
    background: #4c9f38;
    color: white;
    font-weight: 900;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.25rem 0.7rem;
    border-radius: var(--r);
    margin-bottom: 0.4rem;
}
.sdg-target {
    display: inline-block;
    background: var(--ink);
    color: var(--cyan);
    font-weight: 700;
    font-size: 0.8rem;
    padding: 0.2rem 0.7rem;
    border-radius: var(--r);
    margin-bottom: 0.8rem;
}

/* ── Format Section ──────────────────────── */
.section-format {
    padding: 5rem 4vw;
    background: var(--electric-blue);
    background-image: radial-gradient(rgba(0,0,0,0.15) 1px, transparent 1px);
    background-size: 20px 20px;
    color: white;
    border-bottom: var(--border) solid var(--ink);
    text-align: center;
    position: relative;
}
.section-format::after {
    content: "✦";
    position: absolute;
    bottom: 2rem;
    right: 3rem;
    font-size: 2rem;
    color: rgba(255,255,255,0.4);
    pointer-events: none;
}
.format-header { margin-bottom: 3rem; }
.section-format .section-title-lg { color: var(--yellow); }
.format-card {
    background: var(--white);
    color: var(--ink);
    border: 2px solid var(--yellow);
    padding: 2rem;
    text-align: left;
    position: relative;
    overflow: hidden;
    border-radius: var(--r);
    transition: transform 0.2s ease;
}
.format-card:hover { transform: translateY(-5px); }
.format-card:nth-child(even) {
    transform: translateY(18px);
    background: #f8f8f5;
}
.format-card:nth-child(even):hover { transform: translateY(13px); }
.format-number {
    font-size: 5rem;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 2px var(--ink);
    position: absolute;
    top: -12px;
    right: 10px;
    opacity: 0.12;
    line-height: 1;
    pointer-events: none;
}
.format-card h4 {
    font-size: 1.15rem;
    font-weight: 900;
    text-transform: uppercase;
    margin: 0 0 0.5rem;
    margin-top: 1rem;
    letter-spacing: -0.01em;
}
.format-card p {
    font-size: 0.92rem;
    margin: 0;
    line-height: 1.5;
    opacity: 0.8;
}

/* ── Info Strip ────────────────────────── */
.info-strip {
    background: var(--ink);
    color: white;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    border-bottom: var(--border) solid var(--ink);
    position: relative;
}
.info-strip::after {
    content: "✦";
    position: absolute;
    bottom: 1.5rem;
    right: 2.5rem;
    font-size: 1.5rem;
    color: var(--orange);
    opacity: 0.7;
    pointer-events: none;
}
.info-item {
    flex: 1;
    min-width: 160px;
    text-align: center;
    padding: 3rem 1rem;
    border-right: 1px solid rgba(255,255,255,0.12);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 2px;
}
.info-item:last-child { border-right: none; }
.info-number {
    display: block;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: 0.5rem;
    color: var(--orange);
}

/* ── Speakers ──────────────────────────────── */
.section-speakers {
    padding: 5rem 4vw;
    text-align: center;
    background: var(--white);
    border-bottom: var(--border) solid var(--ink);
}
.speaker-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}
.speaker-card {
    width: 180px;
    border: var(--border) solid var(--ink);
    box-shadow: var(--shadow) var(--shadow) 0 var(--ink);
    background: var(--white);
    padding: 1.5rem;
    text-align: center;
    border-radius: var(--r);
    transition: transform 0.2s;
}
.speaker-card:hover { transform: translateY(-4px); }
.speaker-avatar {
    width: 80px;
    height: 80px;
    background: var(--magenta);
    border: 2px solid var(--ink);
    border-radius: var(--r);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 900;
    color: white;
    margin: 0 auto 1rem;
}
.speaker-card p {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    opacity: 0.6;
    letter-spacing: 1px;
    margin: 0;
}

/* ── Partners ──────────────────────────────── */
.partners {
    text-align: center;
    padding: 5rem 4vw;
    background: var(--white);
    border-bottom: var(--border) solid var(--ink);
}
.logo-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}
.logo-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    transition: all 0.3s ease;
    opacity: 0.55;
}
.logo-item:hover {
    opacity: 1;
    transform: scale(1.05);
}
.logo-item img {
    height: 52px;
    max-width: 160px;
    object-fit: contain;
    filter: grayscale(100%) brightness(0);
}

/* ── CTA ───────────────────────────────────── */
.cta-section {
    text-align: center;
    padding: 6rem 4vw;
    border-top: var(--border) solid var(--ink);
    position: relative;
}
.cta-section::after {
    content: "✦";
    position: absolute;
    top: 2rem;
    left: 3rem;
    font-size: 1.8rem;
    color: var(--hot-pink);
    opacity: 0.5;
    pointer-events: none;
}
.cta-inner {
    background: var(--yellow);
    border: var(--border) solid var(--ink);
    box-shadow: 10px 10px 0 var(--ink);
    display: inline-block;
    padding: 3rem 4rem;
    max-width: 600px;
    border-radius: var(--r);
}
.cta-inner h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    margin: 0 0 0.8rem;
    display: block;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
    text-shadow: none;
}
.cta-inner p {
    font-size: 1.05rem;
    margin: 0 0 1.5rem;
    opacity: 0.8;
}

/* ── Footer ────────────────────────────────── */
footer {
    background-color: var(--ink);
    color: white;
    padding: 0;
    border-top: 3px solid var(--yellow);
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 4vw;
}
.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    margin-bottom: 1.5rem;
}
.footer-brand {
    font-size: 1.4rem;
    font-weight: 900;
    color: var(--yellow);
    letter-spacing: -0.03em;
}
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a {
    color: var(--cyan);
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 2px;
}
.footer-links a:hover { text-decoration: underline; }
.footer-bottom { text-align: center; font-size: 0.88rem; opacity: 0.6; }
.footer-bottom a { color: var(--cyan); text-decoration: none; }
.footer-bottom a:hover { text-decoration: underline; }
.copyright { margin-top: 0.8rem; font-size: 0.75rem; opacity: 0.4; }

/* ── Mobile ────────────────────────────────── */
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: 1fr 1fr; }
    .format-card:nth-child(even) { transform: none; }
    .format-card:nth-child(even):hover { transform: translateY(-5px); }
}
@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: 1fr; }
    .section-about { padding: 4rem 4vw; }
    .section-format { padding: 4rem 4vw; }
    .section-speakers { padding: 4rem 4vw; }
    .partners { padding: 4rem 4vw; }
    header { padding: 5rem 4vw 4rem; }
    .hero-meta { flex-direction: column; align-items: center; }
    .info-strip { flex-direction: column; }
    .info-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.12); }
    .info-item:last-child { border-bottom: none; }
    .cta-inner { padding: 2rem 1.5rem; }
    .footer-top { flex-direction: column; gap: 1rem; text-align: center; }
    .logo-grid { gap: 2.5rem; }
    .logo-item img { height: 40px; }
    .speaker-card { width: 150px; }
}
@media (max-width: 480px) {
    header { padding: 4rem 4vw 3rem; }
    header::before { font-size: 60vw; }
    .marquee { font-size: 0.85rem; }
    .brutal-btn { padding: 0.8rem 1.5rem; }
}