/* Landing: real page sections + DF green (#61ba00) + one 3D hero */

:root {
    --df-green: #61ba00;
    --df-green-deep: #4c9300;
    --df-charcoal: #3a3d42;
    --df-ink: #1d1d1f;
}

body.landing-body {
    background: #fff;
    color: var(--df-ink);
}

body.landing-simple {
    min-height: 100vh;
    background:
        radial-gradient(circle at 70% 20%, rgba(97, 186, 0, 0.14), transparent 42%),
        linear-gradient(165deg, #101214 0%, #25282d 52%, #17191c 100%);
    color: #fff;
}

.landing-gate {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 32px 20px;
}

.landing-gate__card {
    width: min(420px, 100%);
    background: rgba(255, 255, 255, 0.96);
    color: var(--df-ink);
    border-radius: 22px;
    padding: 32px 28px 28px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.landing-gate__brand {
    margin: 0 0 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--df-green-deep);
}

.landing-gate__title {
    margin: 0 0 8px;
    font-size: clamp(1.8rem, 4vw, 2.2rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.landing-gate__lead {
    margin: 0 0 22px;
    color: #5c5c5c;
    font-size: 15px;
}

.landing-gate__form .form-label {
    font-weight: 600;
}

.landing-gate__code {
    letter-spacing: 0.04em;
    font-weight: 700;
    font-size: 1.25rem;
    text-align: center;
    margin-bottom: 14px;
    padding-left: 14px;
    padding-right: 14px;
}

.landing-gate__code::placeholder {
    letter-spacing: 0;
    font-weight: 600;
    color: #b0b0b0;
}

body.landing-body .df-nav {
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    color: var(--df-ink);
}

body.landing-body .df-nav__links a {
    color: var(--df-charcoal);
    letter-spacing: 0.12em;
}

body.landing-body .df-nav__links a:hover {
    color: var(--df-green-deep);
}

.df-nav__logo {
    display: block;
    height: 36px;
    width: auto;
}

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 200;
    background: transparent;
}

.scroll-progress__bar {
    display: block;
    height: 100%;
    width: 100%;
    transform-origin: left center;
    transform: scaleX(0);
    background: var(--df-green);
}

.page {
    position: relative;
}

/* Hero: real split, 3D only on the right */
.hero {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    min-height: calc(100vh - 52px);
    background:
        radial-gradient(circle at 80% 40%, rgba(97, 186, 0, 0.16), transparent 36%),
        linear-gradient(160deg, #121416 0%, #2a2d32 55%, #1a1c1f 100%);
    color: #fff;
    overflow: hidden;
}

.hero__copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 72px 8vw 72px 7vw;
    position: relative;
    z-index: 2;
}

.green-kicker {
    margin: 0 0 18px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--df-green);
}

.hero__title {
    margin: 0 0 16px;
    font-size: clamp(2.4rem, 5vw, 4.2rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.02;
}

.hero__title em {
    font-style: normal;
    color: var(--df-green);
}

.hero__lead {
    margin: 0 0 28px;
    max-width: 34rem;
    font-size: 18px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.78);
}

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

.btn-df {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 26px;
    border-radius: 999px;
    background: var(--df-green);
    border: 1px solid var(--df-green);
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    cursor: pointer;
}

.btn-df:hover,
.btn-df:focus {
    background: var(--df-green-deep);
    border-color: var(--df-green-deep);
    color: #fff;
}

.btn-df:active { transform: scale(0.97); }

.btn-ghost-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 22px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.45);
    color: #fff;
    text-decoration: none;
    background: transparent;
}

.hero__stage {
    position: relative;
    min-height: 520px;
}

#hero-model {
    width: 100%;
    height: 100%;
    min-height: 520px;
    background: transparent;
    --poster-color: transparent;
}

.hero__floor {
    position: absolute;
    left: 12%;
    right: 8%;
    bottom: 14%;
    height: 40px;
    border-radius: 50%;
    background: radial-gradient(ellipse, rgba(97, 186, 0, 0.35), transparent 70%);
    filter: blur(8px);
    pointer-events: none;
}

/* Stats strip */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    background: #fff;
    border-bottom: 1px solid #eee;
}

.stat {
    padding: 28px 24px;
    text-align: center;
    border-right: 1px solid #eee;
}

.stat:last-child { border-right: 0; }

.stat strong {
    display: block;
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    letter-spacing: -0.04em;
    color: var(--df-charcoal);
}

.stat strong span { color: var(--df-green); }

.stat small {
    display: block;
    margin-top: 4px;
    color: #6b6b6b;
    font-size: 13px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* Content bands */
.band {
    padding: 88px 24px;
}

.band__inner {
    width: min(1080px, 100%);
    margin: 0 auto;
}

.band--light { background: #f6f7f4; }
.band--white { background: #fff; }

.section-head {
    max-width: 640px;
    margin-bottom: 36px;
}

.section-head h2 {
    margin: 0 0 10px;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 700;
    letter-spacing: -0.03em;
}

.section-head p {
    margin: 0;
    color: #5c5c5c;
    font-size: 17px;
    line-height: 1.5;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.card {
    background: #fff;
    border-radius: 18px;
    padding: 24px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 10px 30px rgba(20, 24, 20, 0.04);
}

.card__step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(97, 186, 0, 0.14);
    color: var(--df-green-deep);
    font-weight: 800;
    margin-bottom: 14px;
}

.card h3 {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 700;
}

.card p {
    margin: 0;
    color: #5a5a5a;
    font-size: 15px;
    line-height: 1.45;
}

/* Photo parallax */
.parallax-photo {
    position: relative;
    min-height: 72vh;
    display: grid;
    align-items: end;
    overflow: hidden;
    color: #fff;
}

.parallax-photo__bg {
    position: absolute;
    inset: -12% 0;
    background:
        linear-gradient(to top, rgba(10, 12, 10, 0.78), rgba(10, 12, 10, 0.15)),
        url("../images/campus.webp") center 40% / cover no-repeat;
    will-change: transform;
}

.parallax-photo__content {
    position: relative;
    z-index: 1;
    width: min(1080px, 100%);
    margin: 0 auto;
    padding: 64px 24px;
}

.parallax-photo__content h2 {
    margin: 0 0 8px;
    font-size: clamp(2rem, 4vw, 3.2rem);
    letter-spacing: -0.03em;
}

.parallax-photo__content p {
    margin: 0;
    max-width: 36rem;
    font-size: 18px;
    color: rgba(255, 255, 255, 0.86);
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
}

.chip {
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(97, 186, 0, 0.9);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
}

/* Join */
.join {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.join__points {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.join__points li {
    position: relative;
    padding: 10px 0 10px 28px;
}

.join__points li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 16px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--df-green);
}

.join-card {
    background: #fff;
    border: 1px solid #e6e6e6;
    border-radius: 22px;
    padding: 28px;
    box-shadow: 0 18px 50px rgba(20, 30, 10, 0.06);
}

.join-card .form-label { color: var(--df-ink); }

.site-foot {
    background: #1c1e21;
    color: rgba(255, 255, 255, 0.7);
    padding: 28px 24px;
    font-size: 13px;
}

.site-foot__inner {
    width: min(1080px, 100%);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.site-foot strong { color: var(--df-green); }

.class-boards {
    display: grid;
    gap: 22px;
}

.class-board {
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 18px;
    padding: 18px 18px 8px;
    box-shadow: 0 10px 28px rgba(26, 32, 24, 0.05);
}

.class-board.is-latest {
    border-color: rgba(97, 186, 0, 0.45);
    box-shadow: 0 14px 34px rgba(97, 186, 0, 0.12);
}

.class-board__head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.class-board__head h3 {
    margin: 4px 0 2px;
    font-size: 1.2rem;
}

.class-board__head p {
    margin: 0;
    color: #6a6f68;
    font-size: 0.92rem;
}

.class-board__badge {
    display: inline-block;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 700;
    color: #3d7600;
    background: rgba(97, 186, 0, 0.16);
    border-radius: 999px;
    padding: 3px 9px;
}

.class-board__count {
    color: #6a6f68;
    font-size: 0.88rem;
    white-space: nowrap;
}

.class-board__table th {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #6a6f68;
}

@media (max-width: 900px) {
    .hero,
    .join,
    .cards,
    .stats {
        grid-template-columns: 1fr;
    }

    .stat { border-right: 0; border-bottom: 1px solid #eee; }
    .hero__copy { padding: 48px 24px 12px; }
    .hero__stage, #hero-model { min-height: 360px; }
    .band { padding: 64px 20px; }
}