:root {
    --teal: #2bb3a3;
    --bg: #f4f6f5;
    --card-bg: #ffffff;
    --text: #2c2c2c;
    --hint: #767676;
    --border: #e0e0e0;
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0 0 3rem;
}

header {
    background: linear-gradient(135deg, #d6f5ea, #b8e6d6);
    padding: 2rem 1.5rem 1.5rem;
}

header h1 { margin: 0 0 0.25rem; font-size: 1.6rem; }
.subtitle { margin: 0 0 0.75rem; color: #45564f; }
nav a { color: #14675c; font-weight: 600; text-decoration: none; }
nav a:hover { text-decoration: underline; }

main {
    max-width: 640px;
    margin: 1.5rem auto 0;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem;
}

.card.hidden { display: none; }

label {
    display: block;
    font-weight: 600;
    margin: 0.5rem 0 0.25rem;
    font-size: 0.9rem;
}

input[type="text"], input[type="number"], select {
    width: 100%;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
}

input[type="range"] { width: 100%; margin: 0.25rem 0; accent-color: var(--teal); }

.hint { color: var(--hint); font-size: 0.85rem; margin: 0.25rem 0 0; }

.result-list {
    list-style: none;
    margin: 0.75rem 0 0;
    padding: 0;
    max-height: 320px;
    overflow-y: auto;
}

.result-list li {
    padding: 0.6rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 0.4rem;
    cursor: pointer;
    transition: background 0.15s;
}

.result-list li:hover { background: #eefaf6; border-color: var(--teal); }
.result-list li .rl-cat { color: var(--hint); font-size: 0.8rem; }

.result-box {
    margin-top: 1rem;
    padding: 1rem;
    background: #f0faf7;
    border: 1px solid var(--teal);
    border-radius: 8px;
}

.result-box .total {
    font-size: 1.6rem;
    font-weight: 700;
    color: #0d675a;
}

.result-box table { width: 100%; border-collapse: collapse; margin-top: 0.75rem; font-size: 0.85rem; }
.result-box th, .result-box td { text-align: left; padding: 0.3rem 0.4rem; border-bottom: 1px solid #d9ede8; }

footer {
    text-align: center;
    color: var(--hint);
    font-size: 0.8rem;
    margin-top: 2rem;
    padding: 0 1rem;
}

.form-grid { display: flex; flex-direction: column; gap: 0.25rem; }
.material-row { display: grid; grid-template-columns: 2fr 1fr 1fr auto; gap: 0.4rem; margin-bottom: 0.4rem; align-items: center; }
button {
    background: var(--teal);
    color: white;
    border: none;
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-size: 0.95rem;
    cursor: pointer;
    margin-top: 0.5rem;
}
button:hover { background: #23988a; }
button.secondary { background: #90a19c; }
.msg { margin-top: 0.75rem; padding: 0.6rem 0.8rem; border-radius: 6px; font-size: 0.9rem; }
.msg.ok { background: #e4f7ee; color: #0d675a; }
.msg.err { background: #fdeaea; color: #a3312a; }