:root {
    --bg-deep: #071409;
    --accent-a: #6dff8f;
    --accent-b: #ffd23f;
    --accent-c: #ff5d5d;
    --accent-gradient: linear-gradient(135deg, var(--accent-a), var(--accent-b) 55%, var(--accent-c));
    --text-main: #f2fbf0;
    --text-dim: rgba(242, 251, 240, 0.68);
    --card-bg: rgba(255, 255, 255, 0.06);
    --card-border: rgba(255, 255, 255, 0.14);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg-deep);
    color: var(--text-main);
    font-family: 'Poppins', sans-serif;
    position: relative;
    overflow-x: hidden;
}

.bg-glow {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(40rem 40rem at 10% 15%, rgba(109, 255, 143, 0.22), transparent 60%),
        radial-gradient(32rem 32rem at 90% 10%, rgba(255, 210, 63, 0.18), transparent 60%),
        radial-gradient(30rem 30rem at 80% 90%, rgba(255, 93, 93, 0.16), transparent 60%),
        linear-gradient(180deg, rgba(7, 20, 9, 0.92), rgba(7, 20, 9, 0.98));
}

.landing {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 0 auto;
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    gap: 2.5rem;
    padding: 3rem 1.5rem;
}

@media (min-width: 860px) {
    .landing {
        grid-template-columns: 1.1fr 0.9fr;
    }
}

.eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 0.75rem;
}

.landing__title {
    font-family: 'Baloo 2', 'Poppins', sans-serif;
    font-size: clamp(2.2rem, 6vw, 3.4rem);
    font-weight: 800;
    margin: 0 0 1rem;
    line-height: 1.05;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: 0.02em;
}

.landing__title span {
    display: inline-block;
    font-size: 0.55em;
    -webkit-text-fill-color: var(--text-dim);
    color: var(--text-dim);
    background: none;
    vertical-align: middle;
    margin: 0 0.1em;
}

.landing__subtitle {
    color: var(--text-dim);
    font-size: 1.05rem;
    max-width: 32rem;
    margin: 0 0 1.75rem;
}

.play-btn {
    display: inline-block;
    text-decoration: none;
    font-family: 'Baloo 2', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    color: #0d2b12;
    background: linear-gradient(180deg, #8dff9f, #4bcf63);
    padding: 0.85rem 2.4rem;
    border-radius: 3rem;
    box-shadow: 0 14px 30px -12px rgba(75, 207, 99, 0.55);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.play-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 36px -12px rgba(75, 207, 99, 0.7);
}

.how-to {
    list-style: none;
    margin: 2.25rem 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.how-to li {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--text-dim);
    font-size: 0.92rem;
}

.how-to__icon {
    font-size: 1.2rem;
    width: 1.8rem;
    text-align: center;
}

.landing__preview {
    display: flex;
    justify-content: center;
}

.preview-board {
    width: 100%;
    max-width: 22rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1.25rem;
    padding: 0.75rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 25px 55px -25px rgba(0, 0, 0, 0.65);
}

.preview-board__row {
    position: relative;
    height: 4.6rem;
    display: flex;
    align-items: center;
    padding-left: 0.75rem;
    overflow: hidden;
    background: repeating-linear-gradient(90deg, rgba(109, 255, 143, 0.14) 0 2.4rem, rgba(109, 255, 143, 0.06) 2.4rem 4.8rem);
    border-radius: 0.75rem;
}

.preview-board__row + .preview-board__row {
    margin-top: 0.5rem;
}

.preview-board__plant {
    font-size: 1.8rem;
    z-index: 1;
    filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.4));
}

.preview-board__zombie {
    position: absolute;
    right: -15%;
    top: 50%;
    height: 3.1rem;
    transform: translateY(-50%);
    animation: walk-across 6s linear infinite;
    filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.45));
}

.preview-board__zombie--slow {
    animation-duration: 8.5s;
    animation-delay: -2s;
}

.preview-board__zombie--fast {
    animation-duration: 4.5s;
    animation-delay: -1s;
}

@keyframes walk-across {
    from { right: -15%; }
    to { right: 105%; }
}