:root {
    color-scheme: light;
    --bg: linear-gradient(180deg, #eef4ff 0%, #f7f9fc 55%, #ffffff 100%);
    --text: #18212f;
    --muted: #607089;
    --header-bg: rgba(255, 255, 255, 0.74);
    --panel-bg: rgba(255, 255, 255, 0.88);
    --panel-border: rgba(92, 128, 176, 0.18);
    --shadow: 0 22px 60px rgba(44, 71, 111, 0.12);
    --accent: #2563eb;
    --accent-strong: #1d4ed8;
    --button-text: #ffffff;
    --input-bg: rgba(255, 255, 255, 0.72);
}

body[data-theme='dark'] {
    color-scheme: dark;
    --bg: radial-gradient(circle at top, #1f3358 0%, #101726 45%, #090d16 100%);
    --text: #eef4ff;
    --muted: #a7b4c9;
    --header-bg: rgba(12, 18, 31, 0.76);
    --panel-bg: rgba(19, 27, 44, 0.88);
    --panel-border: rgba(110, 146, 209, 0.22);
    --shadow: 0 22px 60px rgba(2, 6, 23, 0.45);
    --accent: #7db2ff;
    --accent-strong: #a9caff;
    --button-text: #08101c;
    --input-bg: rgba(10, 16, 29, 0.78);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    min-height: 100vh;
    transition: background 0.25s ease, color 0.25s ease;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem 1.25rem 0;
    max-width: 1100px;
    margin: 0 auto;
}

.eyebrow {
    margin: 0 0 0.4rem;
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1,
h2 {
    margin: 0;
}

h1 {
    font-size: clamp(2rem, 4vw, 3.4rem);
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.subtitle,
.section-description {
    margin: 0.75rem 0 0;
    color: var(--muted);
    line-height: 1.6;
}

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem 3rem;
}

.search-container,
.animal-section,
.contact-section,
.comments-section {
    background: var(--header-bg);
    border: 1px solid var(--panel-border);
    border-radius: 24px;
    backdrop-filter: blur(18px);
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

.search-container {
    margin-bottom: 1.5rem;
}

.animal-section,
.contact-section,
.comments-section {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.animal-panel,
.comments-panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 1.25rem;
}

.animal-panel {
    display: grid;
    gap: 1rem;
    align-content: start;
}

.webcam-container {
    min-height: 280px;
    display: grid;
    place-items: center;
    border-radius: 20px;
    border: 1px dashed var(--panel-border);
    background: var(--input-bg);
    overflow: hidden;
}

.webcam-container canvas {
    display: block;
    width: 100%;
    max-width: 280px;
    height: auto;
    border-radius: 20px;
}

.label-container {
    display: grid;
    gap: 0.75rem;
}

.prediction-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    border-radius: 16px;
    background: var(--input-bg);
    border: 1px solid var(--panel-border);
}

.prediction-label {
    font-weight: 700;
}

.prediction-value {
    color: var(--accent);
    font-weight: 700;
}

.animal-status,
.animal-result {
    margin: 1rem 0 0;
    line-height: 1.6;
}

.animal-result {
    font-weight: 700;
}

.comments-panel {
    min-height: 280px;
}

#find-btn,
#theme-toggle,
#animal-test-start,
.contact-form button {
    border: none;
    border-radius: 999px;
    cursor: pointer;
    font: inherit;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

#find-btn:hover,
#theme-toggle:hover,
#animal-test-start:hover,
.contact-form button:hover {
    transform: translateY(-1px);
}

#find-btn,
#animal-test-start,
.contact-form button {
    background: var(--accent);
    color: var(--button-text);
    padding: 1rem 1.6rem;
    font-size: 1.05rem;
    font-weight: 700;
    box-shadow: 0 18px 30px rgba(37, 99, 235, 0.24);
}

#find-btn:hover,
#animal-test-start:hover,
.contact-form button:hover {
    background: var(--accent-strong);
}

#animal-test-start:disabled {
    opacity: 0.6;
    cursor: wait;
}

#theme-toggle {
    background: var(--panel-bg);
    color: var(--text);
    border: 1px solid var(--panel-border);
    padding: 0.85rem 1.15rem;
    white-space: nowrap;
    box-shadow: var(--shadow);
}

#library-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}

.library-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 1.4rem;
    backdrop-filter: blur(18px);
}

.library-card h2 {
    margin-bottom: 0.75rem;
    color: var(--accent);
    font-size: 1.3rem;
}

.library-card p {
    margin: 0.5rem 0;
    line-height: 1.6;
    color: var(--muted);
}

.library-card strong {
    color: var(--text);
}

.contact-form {
    display: grid;
    gap: 1rem;
}

.contact-form label {
    display: grid;
    gap: 0.45rem;
    font-weight: 700;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    border-radius: 16px;
    border: 1px solid var(--panel-border);
    background: var(--input-bg);
    color: var(--text);
    padding: 0.95rem 1rem;
    font: inherit;
}

.contact-form textarea {
    resize: vertical;
    min-height: 140px;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--muted);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: 2px solid rgba(37, 99, 235, 0.25);
    border-color: var(--accent);
}

.comments-panel noscript {
    color: var(--muted);
}

@media (max-width: 720px) {
    .page-header,
    .animal-section,
    .contact-section,
    .comments-section {
        flex-direction: column;
        grid-template-columns: 1fr;
        align-items: stretch;
    }

    #theme-toggle,
    #find-btn,
    #animal-test-start,
    .contact-form button {
        width: 100%;
    }
}