:root {
    --bg-primary: #000000;
    --bg-secondary: #1c1c1e;
    --text-primary: #ffffff;
    --text-secondary: #8e8e93;
    --accent-color: #0a84ff;
    --border-color: #38383a;
    --success-color: #30d158;
    --warning-color: #ffd60a;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #fff, #0a84ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

.upload-section {
    margin: 2rem 0;
}

.upload-box {
    border: 2px dashed var(--border-color);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: var(--bg-secondary);
}

.upload-box:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.result-section {
    margin-top: 2rem;
}

.score-container {
    text-align: center;
    margin-bottom: 2rem;
}

.score {
    font-size: 4rem;
    font-weight: 700;
    color: var(--accent-color);
}

.score-max {
    font-size: 2rem;
    color: var(--text-secondary);
}

.feedback-container {
    background-color: var(--bg-secondary);
    border-radius: 20px;
    padding: 2rem;
}

.feedback-container h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.feedback-list {
    display: grid;
    gap: 1rem;
}

.feedback-item {
    background-color: var(--bg-primary);
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.feedback-item h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

footer {
    margin-top: auto;
    text-align: center;
    padding: 2rem 0;
    color: var(--text-secondary);
}

.loading {
    color: var(--accent-color);
    font-size: 1.2rem;
    padding: 2rem;
    text-align: center;
    animation: pulse 1.5s infinite;
}

.error {
    color: #ff453a;
    font-size: 1.2rem;
    padding: 2rem;
    text-align: center;
    background-color: rgba(255, 69, 58, 0.1);
    border-radius: 12px;
}

@keyframes pulse {
    0% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.6;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .upload-box {
        padding: 2rem;
    }
}

.subscription-section {
    margin-top: 4rem;
    text-align: center;
}

.subscription-box {
    background-color: var(--bg-secondary);
    border-radius: 20px;
    padding: 2rem;
    max-width: 400px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
}

.subscription-box h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.subscription-box ul {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.subscription-box li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.subscription-box li:before {
    content: "✓";
    color: var(--success-color);
    position: absolute;
    left: 0;
}

.subscribe-btn {
    background: linear-gradient(45deg, #007AFF, #5856D6);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.subscribe-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 122, 255, 0.3);
}

.subscribe-btn:disabled {
    background: #666;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.subscribe-btn.subscribed {
    background: #34C759;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.legal-links {
    display: flex;
    gap: 2rem;
}

.legal-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.legal-links a:hover {
    color: var(--accent-color);
}

.premium-feature {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin: 15px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.premium-feature h3 {
    color: #fff;
    margin: 0 0 10px 0;
    font-size: 1.2em;
}

.premium-feature p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
    font-size: 0.9em;
}

.success-message,
.cancel-message {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    max-width: 600px;
    margin: 100px auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.success-message h1,
.cancel-message h1 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 2em;
}

.success-message p,
.cancel-message p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
    line-height: 1.6;
}

.success-message ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
    text-align: left;
}

.success-message ul li {
    color: rgba(255, 255, 255, 0.7);
    margin: 10px 0;
    padding-left: 25px;
    position: relative;
}

.success-message ul li:before {
    content: "✓";
    color: #34C759;
    position: absolute;
    left: 0;
}

.btn {
    display: inline-block;
    background: linear-gradient(45deg, #007AFF, #5856D6);
    color: white;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 8px;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 122, 255, 0.3);
}

.subscription-email {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1em;
    box-sizing: border-box;
}

.subscription-email:focus {
    outline: none;
    border-color: var(--accent-color);
}

.progress-chart-container {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin: 15px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: block;
    text-align: center;
}

.progress-chart-container h3 {
    color: #fff;
    margin-bottom: 10px;
}

#progressChart {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    background: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0;
}

.detailed-analysis-list {
    color: #fff;
    margin: 0 0 10px 0;
    padding-left: 20px;
}

.beauty-tips-list {
    color: #fff;
    margin: 0 0 10px 0;
    padding-left: 20px;
}

.send-code-btn, .verify-code-btn {
    background: linear-gradient(45deg, #007AFF, #5856D6);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-right: 10px;
    margin-bottom: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.08);
}

.send-code-btn:hover, .verify-code-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 122, 255, 0.18);
    background: linear-gradient(45deg, #5856D6, #007AFF);
}

.send-code-btn:disabled, .verify-code-btn:disabled {
    background: #666;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.verify-code-btn {
    margin-right: 0;
    margin-top: 1rem;
}

#verificationCode {
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1em;
    margin-right: 12px;
    outline: none;
    transition: border-color 0.2s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
#verificationCode:focus {
    border-color: var(--accent-color);
    background: #18181b;
}

#globalError {
    max-width: 700px;
    margin: 2rem auto 2rem auto;
    padding: 1.5rem 2rem;
    background: #2a1a1a;
    color: #ff453a;
    border-radius: 18px;
    font-size: 1.2rem;
    text-align: center;
    box-shadow: 0 2px 16px rgba(0,0,0,0.08);
    display: none;
}

#analyzedImage {
    max-width: 300px;
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 16px;
}
@media (max-width: 600px) {
    #analyzedImage {
        max-width: 90vw;
    }
}