/* ═══════════════════════════════════════════════════════════════
   HERO - Hero Section, DAG Visualization, Scroll Indicator
   ═══════════════════════════════════════════════════════════════ */

/* Hero Section */
.hero {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 100px 24px 80px;
    position: relative;
    z-index: 10;
    overflow: hidden;
}

/* Hero Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--neon);
    background: rgba(0,255,0,0.1);
    border: 1px solid rgba(0,255,0,0.3);
    padding: 10px 20px;
    margin-bottom: 32px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    animation: fadeInDown 0.8s ease forwards;
    clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--neon);
    border-radius: 50%;
    box-shadow: var(--glow-neon);
    animation: pulse 1.5s infinite;
}

/* Hero Title */
.hero-title {
    margin-bottom: 24px;
    opacity: 0;
    animation: heroReveal 1s ease 0.3s forwards;
}

.hero-title .neon {
    color: var(--neon);
    text-shadow: var(--glow-neon-intense);
    display: block;
    font-size: clamp(0.6rem, 2.4vw, 1.6rem);
}

.hero-title .sub {
    font-size: 0.35em;
    color: rgba(255,255,255,0.6);
    letter-spacing: 0.3em;
    display: block;
    margin-top: 16px;
    text-shadow: none;
}

/* Hero Tagline */
.hero-tagline {
    font-family: var(--font-mono);
    font-size: clamp(1rem, 3vw, 1.3rem);
    color: var(--neon-cyan);
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    text-shadow: var(--glow-cyan);
}

/* Hero Description */
.hero-desc {
    max-width: 600px;
    margin-bottom: 40px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.8s forwards;
}

/* Hero CTA */
.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 16px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1s forwards;
}

@media (min-width: 500px) {
    .hero-cta { flex-direction: row; }
}

/* ── DAG Block-Lattice Visualization ── */
.hero-dag {
    margin-top: 40px;
    opacity: 0;
    animation: dagReveal 1.2s ease 1.2s forwards;
    position: relative;
    display: flex;
    gap: 24px;
    align-items: flex-start;
    width: 100%;
    max-width: 700px;
}

.dag-canvas-container {
    position: relative;
    width: 280px;
    min-width: 280px;
    height: 420px;
}

#dag-canvas {
    width: 100%;
    height: 100%;
    border-radius: 12px;
    background: rgba(0,10,5,0.6);
    border: 1px solid rgba(0,255,0,0.15);
}

.dag-explanation {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.dag-explanation-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--neon);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.dag-step {
    background: rgba(0,20,10,0.6);
    border: 1px solid rgba(0,255,0,0.1);
    border-radius: 8px;
    padding: 10px 12px;
    opacity: 0.3;
    transition: all 0.4s ease;
    cursor: pointer;
}

.dag-step:hover {
    opacity: 0.7;
    border-color: rgba(0,255,0,0.3);
}

.dag-step.active {
    opacity: 1;
    border-color: rgba(0,255,0,0.4);
    background: rgba(0,255,0,0.05);
}

.dag-step.paused {
    opacity: 1;
    border-color: rgba(0,255,0,0.8);
    background: rgba(0,255,0,0.1);
    box-shadow: 0 0 10px rgba(0,255,0,0.3);
}

.dag-step-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.dag-step-num {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--neon);
    color: #000;
    font-size: 0.65rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dag-step-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--neon);
    font-weight: 600;
}

.dag-step-desc {
    font-size: 0.68rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.4;
    padding-left: 28px;
}

.dag-step-desc code {
    background: rgba(0,255,0,0.15);
    padding: 1px 4px;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--neon);
}

/* DAG Online Status */
.dag-online-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 280px;
    gap: 16px;
    transition: opacity 0.5s ease;
}

.dag-online-status.fading {
    opacity: 0;
}

.online-indicator {
    width: 18px;
    height: 18px;
    background: #00ff00;
    border-radius: 50%;
    box-shadow: 0 0 15px #00ff00;
}

.online-text {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: #00ff00;
    letter-spacing: 0.25em;
}

.online-subtext {
    font-size: 0.65rem;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.dag-label {
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    white-space: nowrap;
}

.dag-info {
    display: none;
}

/* ── Scroll Indicator ── */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1.5s forwards;
    cursor: pointer;
}

.scroll-indicator span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.4);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(180deg, var(--neon), transparent);
    position: relative;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: -2px;
    width: 5px;
    height: 10px;
    background: var(--neon);
    box-shadow: var(--glow-neon);
    animation: scrollDown 2s infinite;
}

/* ── Keyframes ── */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes heroReveal {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes dagReveal {
    from { opacity: 0; transform: translateY(60px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scrollDown {
    0% { top: 0; opacity: 1; }
    100% { top: 100%; opacity: 0; }
}