:root {
    --color-primary: #2d6a4f;
    --color-primary-light: #40916c;
    --color-bg: #f0f4f1;
    --color-card: #ffffff;
    --color-text: #212529;
    --color-muted: #6c757d;
    --color-border: #dee2e6;
    --radius: 10px;
    --shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: var(--color-primary);
    color: white;
    padding: 20px 16px;
    text-align: center;
}

header h1 {
    font-size: 1.3rem;
    font-weight: 700;
}

header .subtitle {
    font-size: 0.85rem;
    opacity: 0.85;
    margin-top: 4px;
}

main {
    flex: 1;
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
}

.controls {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    position: sticky;
    top: 0;
    background: var(--color-bg);
    z-index: 10;
}

.controls input,
.controls select {
    font-size: 0.95rem;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-card);
    color: var(--color-text);
    min-height: 44px;
}

.controls input {
    flex: 1;
}

.controls select {
    flex-shrink: 0;
}

.summary {
    padding: 0 16px 4px;
    font-size: 0.85rem;
    color: var(--color-muted);
}

.card-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 8px 16px 24px;
}

.observation-card {
    background: var(--color-card);
    border-radius: var(--radius);
    padding: 14px 16px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: box-shadow 0.15s, transform 0.15s;
}

.observation-card:active {
    transform: scale(0.98);
}

.species-name {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-primary);
}

.scientific-name {
    font-style: italic;
    color: var(--color-muted);
    font-size: 0.8rem;
    margin-top: 1px;
}

.meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--color-text);
}

.meta span {
    white-space: nowrap;
}

.loading {
    text-align: center;
    padding: 40px 16px;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.error {
    text-align: center;
    padding: 20px 16px;
    color: #dc3545;
    font-size: 0.95rem;
}

.no-results {
    text-align: center;
    padding: 40px 16px;
    color: var(--color-muted);
}

footer {
    text-align: center;
    padding: 16px;
    font-size: 0.8rem;
    color: var(--color-muted);
    border-top: 1px solid var(--color-border);
    margin-top: auto;
}

footer a {
    color: var(--color-primary);
}

.footer-org {
    margin-top: 4px;
    font-weight: 500;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.modal[hidden] {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
}

.modal-content {
    position: relative;
    background: var(--color-card);
    border-radius: var(--radius);
    max-width: 400px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.modal-close {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 1;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.modal-image-wrapper {
    position: relative;
    min-height: 180px;
    background: var(--color-bg);
    border-radius: var(--radius) var(--radius) 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-image {
    width: 100%;
    border-radius: var(--radius) var(--radius) 0 0;
    display: block;
}

.modal-loading,
.modal-no-image {
    color: var(--color-muted);
    font-size: 0.9rem;
    padding: 40px 16px;
    text-align: center;
}

.modal-info {
    padding: 16px;
}

.modal-vernacular {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.modal-scientific {
    font-style: italic;
    color: var(--color-muted);
    font-size: 0.85rem;
    margin-top: 2px;
}

.modal-description {
    font-size: 0.9rem;
    margin-top: 10px;
    color: var(--color-text);
    line-height: 1.5;
}

.modal-link {
    display: inline-block;
    margin-top: 12px;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

@media (min-width: 768px) {
    header h1 {
        font-size: 1.6rem;
    }

    .card-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .controls {
        padding: 16px 16px 8px;
    }

    .observation-card:hover {
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
    }

    .modal-content {
        max-width: 480px;
    }
}