:root {
    --bg-forest: rgba(12, 35, 18, 0.75);
    --panel: rgba(255, 255, 255, 0.18);
    --panel-strong: rgba(255, 255, 255, 0.26);
    --border: rgba(255, 255, 255, 0.22);
    --ink: #f3f9f2;
    --muted: #d9ead8;
    --accent: #f4b942;
    --accent-strong: #e67e22;
    --shadow: rgba(8, 12, 8, 0.42);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16px;
    color: var(--ink);
    background:
        linear-gradient(rgba(10, 20, 12, 0.42), rgba(10, 20, 12, 0.38)),
        url("leaves.jpg") center/cover no-repeat fixed;
}

.container {
    width: min(1100px, calc(100% - 2rem));
    margin: 0 auto;
}

header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

h1 {
    margin: 0;
    padding: 0.2rem 0.5rem 0;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    line-height: 1.1;
    color: #f5f7e8;
    text-shadow: 0 3px 18px rgba(22, 42, 18, 0.7);
    letter-spacing: 0.04em;
}

.visible {
    padding: 0.8rem 0 0.75rem;
    background: rgba(15, 35, 18, 0.42);
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

header {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0;
}

.ctrlGrp {
    display: flex;
    flex: 1 1 170px;
    flex-direction: column;
    justify-content: end;
    min-width: 0;
}

label {
    display: block;
    margin-bottom: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 9px 9px 0 0;
    background: rgba(255, 255, 255, 0.12);
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

input,
button {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 0 0 10px 10px;
    padding: 0.6rem 0.8rem;
    font: inherit;
}

input {
    background: rgba(255, 255, 255, 0.92);
    color: #1e2a21;
    box-shadow: inset 0 1px 6px rgba(0, 0, 0, 0.08);
}

input[disabled] {
    background: rgba(220, 233, 221, 0.76);
    color: #1d2e22;
}

button {
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
    color: #1d1c13;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
    box-shadow: 0 10px 24px rgba(220, 133, 34, 0.35);
}

button:hover,
button:focus-visible {
    transform: translateY(-1px);
    filter: brightness(1.04);
}

button:active {
    transform: translateY(0);
}

.reports {
    margin-top: 0.5rem;
}

main {
    padding: 1rem 0 2rem;
}

#forestCanvas {
    display: block;
    width: 100%;
    max-width: 100%;
    background: rgba(25, 59, 31, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 18px 40px var(--shadow);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

p {
    margin: 0;
    color: #fff1cb;
    text-shadow: 1px 2px 2px rgba(0, 0, 0, 0.45);
    font-size: 0.92rem;
    letter-spacing: 0.03em;
}

@media (max-width: 760px) {
    .controls {
        flex-direction: column;
    }

    .ctrlGrp {
        flex-basis: 100%;
    }

    .container {
        width: min(100% - 1rem, 1100px);
    }
}