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

/* THEME VARIABLES */
:root {
    --bg-gradient: radial-gradient(circle at top, #6A0DAD 0%, #4B0082 40%, #2B004A 100%);
    --bg-surface: rgba(10, 0, 30, 0.8);
    --bg-nav: rgba(20, 0, 40, 0.85);
    --text-main: #FFFFFF;
    --accent-gold: #F4C542;
    --accent-gold-soft: #FFD95E;
    --accent-border: rgba(255,255,255,0.4);
}

/* DARK MODE */
body.dark {
    --bg-gradient: radial-gradient(circle at top, #1A1A1A 0%, #050505 40%, #000000 100%);
    --bg-surface: rgba(20, 20, 20, 0.9);
    --bg-nav: rgba(10, 10, 10, 0.9);
    --text-main: #F5F5F5;
    --accent-border: rgba(255,255,255,0.3);
}

/* BODY */
body {
    font-family: 'PurpleTanuki', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-main);
    background: var(--bg-gradient);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* PARALLAX BACKGROUND */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at 10% 0%, rgba(244,197,66,0.18) 0%, transparent 40%),
                radial-gradient(circle at 90% 20%, rgba(255,255,255,0.12) 0%, transparent 45%);
    pointer-events: none;
    z-index: -1;
}

/* MAIN */
main {
    padding: 0 16px 40px;
}

/* ICONS */
.icon {
    width: 24px;
    height: 24px;
    display: inline-block;
}

.nav-icon {
    cursor: pointer;
    margin-left: 12px;
}

.hidden {
    display: none;
}

/* THEME ICON */
#theme-icon {
    transition: opacity 0.2s ease, transform 0.2s ease;
}

#theme-icon:hover {
    opacity: 0.85;
    transform: scale(1.08);
}

/* NAV */
.nav {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: var(--bg-nav);
    backdrop-filter: blur(10px);
}

.nav-brand {
    font-weight: 700;
    letter-spacing: 0.04em;
    font-size: 1rem;
}

/* NAV LINKS */
.nav-links {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-links a {
    font-size: 0.95rem;
    text-decoration: none;
    color: var(--accent-gold);
    opacity: 0.9;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.18);
    transition: opacity 0.18s ease, background 0.18s ease;
}

.nav-links a:hover {
    opacity: 1;
    background: rgba(255,255,255,0.14);
}

/* HERO */
.hero {
    padding-top: 24px;
    padding-bottom: 24px;
}

.hero-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 32px;
    align-items: center;
}

.hero-text h1 {
    font-size: 2.4rem;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 16px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-img {
    width: 220px;
    filter: drop-shadow(0 12px 24px rgba(0,0,0,0.45));
    animation: floatTanuki 3.5s ease-in-out infinite;
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 22px;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.btn.primary {
    background-color: var(--accent-gold);
    color: #4B0082;
    box-shadow: 0 8px 18px rgba(0,0,0,0.35);
}

.btn.primary:hover {
    background-color: var(--accent-gold-soft);
    transform: translateY(-2px);
}

body.dark .btn.primary {
    color: #2B004A;
}

.btn.ghost {
    background-color: transparent;
    border: 1px solid var(--accent-border);
    color: var(--text-main);
}

.btn.ghost:hover {
    background-color: rgba(255,255,255,0.08);
    transform: translateY(-2px);
}

/* SECTIONS */
.section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 0;
}

/* TWO-COLUMN */
.two-column {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 32px;
    align-items: center;
}

.section-text h2 {
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.section-text p {
    font-size: 1.05rem;
    line-height: 1.6rem;
    margin-bottom: 12px;
}

.section-media {
    display: flex;
    justify-content: center;
}

/* VIDEO CARD */
.video-card {
    background: var(--bg-surface);
    border-radius: 18px;
    padding: 12px;
    box-shadow: 0 12px 28px rgba(0,0,0,0.5);
}

.demo-video {
    width: 100%;
    border-radius: 12px;
}

/* CARD GRID */
.card-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 24px;
}

.card {
    background: var(--bg-surface);
    border-radius: 18px;
    padding: 20px 18px;
    box-shadow: 0 10px 24px rgba(0,0,0,0.45);
}

.card h2 {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.card p {
    font-size: 1.02rem;
    line-height: 1.6rem;
    margin-bottom: 12px;
}

/* CHECKLIST */
.checklist {
    list-style: none;
    margin-top: 8px;
}

.checklist li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.02rem;
}

/* TANUKI LOOP */
.tanuki-loop {
    width: 200px;
    margin: 8px 0 10px;
    transition: transform 0.2s ease;
}

.tanuki-loop:hover {
    transform: scale(1.05);
}

.tanuki-loop.wiggle:hover {
    transform: none;
}

/* FOUNDER TAG */
.founder-tag {
    background: rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 18px;
    font-size: 0.98rem;
    line-height: 1.5rem;
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

/* PLUSHIE */
.plushie-section {
    padding-top: 16px;
}

.plushie-card {
    background: var(--bg-surface);
    border-radius: 20px;
    padding: 20px 18px;
    box-shadow: 0 12px 26px rgba(0,0,0,0.5);
}

.plushie-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 20px;
    align-items: center;
}

.plushie-img {
    width: 200px;
    border-radius: 16px;
    box-shadow: 0 10px 24px rgba(0,0,0,0.5);
}

.plushie-text h2 {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.plushie-text p {
    font-size: 1.02rem;
    line-height: 1.6rem;
}

/* NOTIFY */
.notify-section {
    padding-top: 16px;
}

.notify-card {
    max-width: 520px;
    margin: 0 auto;
    background: var(--bg-surface);
    border-radius: 20px;
    padding: 22px 18px;
    box-shadow: 0 12px 26px rgba(0,0,0,0.5);
    text-align: center;
}

.notify-card h2 {
    font-size: 1.7rem;
    margin-bottom: 8px;
}

.notify-card p {
    font-size: 1.02rem;
    margin-bottom: 10px;
}

#notify-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
    justify-content: center;
}

#notify-email {
    flex: 1 1 180px;
    padding: 10px 12px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.25);
    box-shadow: 0 4px 12px rgba(0,0,0,0.35);
    font-size: 0.98rem;
}

.notify-note {
    margin-top: 8px;
    font-size: 0.9rem;
    opacity: 0.85;
}

/* FOOTER */
.footer {
    text-align: center;
    padding: 20px 0 28px;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* FLOATING TANUKI */
@keyframes floatTanuki {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
    100% { transform: translateY(0px); }
}

/* WIGGLE */
.wiggle {
    animation: wiggleAnim 0.4s ease-in-out;
}

@keyframes wiggleAnim {
    0% { transform: rotate(0deg); }
    25% { transform: rotate(3deg); }
    50% { transform: rotate(-3deg); }
    75% { transform: rotate(3deg); }
    100% { transform: rotate(0deg); }
}

/* FADE-IN */
.fade-in {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* MOBILE */
@media (max-width: 800px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .two-column {
        grid-template-columns: 1fr;
    }

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

    .plushie-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .nav-links {
        display: none;
    }

    .nav-links.open {
        position: absolute;
        top: 48px;
        right: 16px;
        background: var(--bg-nav);
        padding: 10px 12px;
        border-radius: 12px;
        display: flex;
        flex-direction: column;
        gap: 8px;
        animation: fadeMenu 0.25s ease forwards;
    }
}

@keyframes fadeMenu {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}