:root {
    --bg-color: #f8f4ff;
    --card-bg: #ffffff;
    --text-color: #222;
    --sub-text: #666;
    --border-color: #e0d8f0;
    --button-bg: #7c4dff;
    --button-text: #fff;
    --button-hover: #6535e8;
    --outline-border: #7c4dff;
    --dog-color: #ff8a65;
    --cat-color: #7c4dff;
    --shadow: 0 4px 24px rgba(124,77,255,0.10);
}

[data-theme="dark"] {
    --bg-color: #1a1625;
    --card-bg: #261e3a;
    --text-color: #f0eaff;
    --sub-text: #a89bc4;
    --border-color: #3a2e55;
    --button-bg: #7c4dff;
    --button-text: #fff;
    --button-hover: #9a6fff;
    --outline-border: #9a6fff;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

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

body {
    font-family: 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
    padding: 20px;
}

#theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 1.2em;
    cursor: pointer;
    box-shadow: var(--shadow);
    z-index: 100;
    transition: background-color 0.3s;
}

.container {
    max-width: 560px;
    margin: 0 auto;
    padding: 20px 0 60px;
}

.back-link {
    display: inline-block;
    color: var(--sub-text);
    text-decoration: none;
    font-size: 0.9em;
    margin-bottom: 20px;
    transition: color 0.2s;
}
.back-link:hover { color: var(--button-bg); }

.hero {
    text-align: center;
    margin-bottom: 32px;
}

.hero h1 {
    font-size: 2em;
    font-weight: 800;
    margin-bottom: 10px;
}

.subtitle {
    color: var(--sub-text);
    font-size: 1em;
    line-height: 1.6;
}

/* 업로드 영역 */
.upload-area {
    background: var(--card-bg);
    border: 2px dashed var(--border-color);
    border-radius: 20px;
    padding: 48px 24px;
    text-align: center;
    transition: border-color 0.2s, background 0.3s;
    box-shadow: var(--shadow);
}

.upload-area.drag-over {
    border-color: var(--button-bg);
    background: color-mix(in srgb, var(--button-bg) 8%, var(--card-bg));
}

.upload-icon {
    font-size: 3em;
    margin-bottom: 12px;
}

.upload-area p {
    color: var(--sub-text);
    margin-bottom: 24px;
}

/* 버튼 */
.btn-group {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 16px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 50px;
    font-size: 0.95em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--button-bg);
    color: var(--button-text);
}
.btn-primary:hover { background: var(--button-hover); transform: translateY(-1px); }

.btn-secondary {
    background: var(--dog-color);
    color: #fff;
}
.btn-secondary:hover { opacity: 0.85; transform: translateY(-1px); }

.btn-outline {
    background: transparent;
    color: var(--outline-border);
    border: 2px solid var(--outline-border);
}
.btn-outline:hover { background: color-mix(in srgb, var(--button-bg) 10%, transparent); }

/* 웹캠 */
.webcam-section {
    text-align: center;
}

#webcam {
    width: 100%;
    max-width: 420px;
    border-radius: 16px;
    background: #000;
    display: block;
    margin: 0 auto 20px;
    transform: scaleX(-1);
}

/* 미리보기 */
.preview-section {
    text-align: center;
}

#preview-img {
    width: 100%;
    max-width: 420px;
    max-height: 380px;
    object-fit: cover;
    border-radius: 16px;
    display: block;
    margin: 0 auto 20px;
    box-shadow: var(--shadow);
}

/* 로딩 */
.loading {
    text-align: center;
    padding: 60px 0;
}

.paw-loader {
    font-size: 3em;
    animation: pawBounce 0.8s ease-in-out infinite alternate;
    display: inline-block;
    margin-bottom: 16px;
}

@keyframes pawBounce {
    from { transform: translateY(0) scale(1); }
    to   { transform: translateY(-12px) scale(1.15); }
}

.loading p { color: var(--sub-text); font-size: 1em; }

/* 결과 */
.result-section {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 28px 24px;
    box-shadow: var(--shadow);
    text-align: center;
}

.result-preview {
    margin-bottom: 20px;
}

#result-img {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--button-bg);
    box-shadow: var(--shadow);
}

.result-title {
    font-size: 2em;
    font-weight: 800;
    margin-bottom: 24px;
    animation: popIn 0.4s cubic-bezier(0.34,1.56,0.64,1);
}

.result-title.dog { color: var(--dog-color); }
.result-title.cat { color: var(--cat-color); }

@keyframes popIn {
    from { transform: scale(0.5); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}

.result-bars {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 24px;
}

.bar-item { text-align: left; }

.bar-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.9em;
    font-weight: 600;
    margin-bottom: 6px;
}

.bar-track {
    width: 100%;
    height: 14px;
    background: var(--border-color);
    border-radius: 999px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    border-radius: 999px;
    width: 0%;
    transition: width 1s cubic-bezier(0.22,1,0.36,1);
}

.dog-fill { background: linear-gradient(90deg, #ffb347, var(--dog-color)); }
.cat-fill { background: linear-gradient(90deg, #a78bfa, var(--cat-color)); }

.percentage { font-weight: 700; }

.result-description {
    background: var(--bg-color);
    border-radius: 12px;
    padding: 16px;
    font-size: 0.95em;
    line-height: 1.7;
    color: var(--sub-text);
    margin-bottom: 24px;
    white-space: pre-line;
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.6em; }
    .btn { padding: 10px 18px; font-size: 0.9em; }
}