:root {
    color-scheme: light;
    --bg-color: #f4efe8;
    --bg-pattern: url("data:image/svg+xml,%3Csvg width='120' height='120' viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23cfb493' fill-opacity='0.18'%3E%3Cpath d='M0 60h120v2H0zm60-60h2v120h-2z'/%3E%3Ccircle cx='60' cy='60' r='14'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    --text-color: #1f2933;
    --muted-text: #52606d;
    --panel-bg: rgba(255, 252, 247, 0.9);
    --panel-border: rgba(180, 146, 102, 0.2);
    --card-bg: #fffaf2;
    --shadow-color: rgba(86, 62, 31, 0.16);
    --accent: #2f855a;
    --accent-hover: #276749;
    --accent-shadow: rgba(47, 133, 90, 0.35);
    --toggle-bg: #ffffff;
    --toggle-border: rgba(31, 41, 51, 0.12);
}

body.dark-mode {
    color-scheme: dark;
    --bg-color: #111827;
    --bg-pattern: url("data:image/svg+xml,%3Csvg width='160' height='160' viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2329b6f6' fill-opacity='0.09'%3E%3Cpath d='M80 0l80 80-80 80L0 80z'/%3E%3Ccircle cx='80' cy='80' r='18'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    --text-color: #e5edf5;
    --muted-text: #c4d0dd;
    --panel-bg: rgba(17, 24, 39, 0.82);
    --panel-border: rgba(148, 163, 184, 0.22);
    --card-bg: rgba(30, 41, 59, 0.92);
    --shadow-color: rgba(2, 6, 23, 0.45);
    --accent: #38b2ac;
    --accent-hover: #319795;
    --accent-shadow: rgba(56, 178, 172, 0.35);
    --toggle-bg: rgba(15, 23, 42, 0.9);
    --toggle-border: rgba(226, 232, 240, 0.16);
}

* {
    box-sizing: border-box;
}

body {
    font-family: "Trebuchet MS", sans-serif;
    background-color: var(--bg-color);
    background-image: var(--bg-pattern);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 24px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    width: min(720px, 100%);
    text-align: center;
    background-color: var(--panel-bg);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--panel-border);
    box-shadow: 0 20px 45px var(--shadow-color);
    backdrop-filter: blur(12px);
}

.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

h1 {
    margin: 0;
    font-size: clamp(2rem, 5vw, 2.8rem);
    color: var(--text-color);
}

p {
    color: var(--muted-text);
}

#theme-toggle,
.primary-btn,
.submit-btn {
    cursor: pointer;
    border-radius: 999px;
    border: none;
    transition: all 0.3s ease-in-out;
}

#theme-toggle {
    background-color: var(--toggle-bg);
    color: var(--text-color);
    border: 1px solid var(--toggle-border);
    padding: 12px 18px;
    font-size: 0.95rem;
    white-space: nowrap;
}

#theme-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px var(--shadow-color);
}

.primary-btn,
.submit-btn {
    background-color: var(--accent);
    color: #ffffff;
    padding: 15px 32px;
    font-size: 16px;
    margin: 20px 0;
    box-shadow: 0 10px 25px var(--accent-shadow);
}

.primary-btn:hover,
.submit-btn:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 16px 30px var(--accent-shadow);
    transform: translateY(-2px);
}

.intro-text {
    margin: 18px 0 0;
}

.test-section,
.probability-section {
    margin-top: 32px;
    padding: 28px;
    border-radius: 24px;
    background-color: var(--card-bg);
    box-shadow: 0 10px 25px var(--shadow-color);
    text-align: left;
}

.test-section {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 320px);
    gap: 24px;
}

.test-copy h2,
.probability-section h2 {
    margin: 0 0 10px;
    font-size: 1.7rem;
    color: var(--text-color);
}

.upload-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

#image-upload {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.preview-panel {
    display: grid;
    gap: 16px;
}

.image-preview-container {
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--card-bg);
    border-radius: 18px;
    box-shadow: 0 10px 25px var(--shadow-color);
    overflow: hidden;
    border: 1px solid var(--panel-border);
}

#preview-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.preview-placeholder {
    margin: 0;
    padding: 24px;
    text-align: center;
}

.result-card {
    padding: 20px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.32), rgba(255, 255, 255, 0.08));
    border: 1px solid var(--panel-border);
}

.result-card h3 {
    margin: 0 0 8px;
    font-size: 1.4rem;
}

.status-message {
    margin: 14px 0 0;
    font-size: 0.95rem;
}

.label-container {
    display: grid;
    gap: 14px;
    margin-top: 18px;
}

.prediction-row {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr) 52px;
    gap: 12px;
    align-items: center;
}

.prediction-label,
.prediction-value {
    font-weight: 700;
    color: var(--text-color);
}

.prediction-bar {
    width: 100%;
    height: 12px;
    border-radius: 999px;
    overflow: hidden;
    background-color: rgba(128, 128, 128, 0.18);
}

.prediction-fill {
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent), #f59e0b);
    transition: width 0.2s ease-out;
}

.contact-section {
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--panel-border);
    text-align: left;
}

.contact-section h2,
.comments-section h2 {
    margin: 0 0 8px;
    font-size: 1.6rem;
    color: var(--text-color);
}

.contact-form {
    display: grid;
    gap: 12px;
    margin-top: 20px;
}

.contact-form label {
    font-weight: 700;
    color: var(--text-color);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid var(--toggle-border);
    background-color: var(--card-bg);
    color: var(--text-color);
    font: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
}

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

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-shadow);
}

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

.submit-btn {
    justify-self: start;
    margin-bottom: 0;
}

.comments-section {
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--panel-border);
    text-align: left;
}

#disqus_thread {
    margin-top: 20px;
    padding: 20px;
    border-radius: 18px;
    background-color: var(--card-bg);
    box-shadow: 0 10px 25px var(--shadow-color);
}

@media (max-width: 640px) {
    .container {
        padding: 28px 20px;
    }

    .top-bar {
        flex-direction: column;
        align-items: stretch;
    }

    #theme-toggle {
        width: 100%;
    }

    .test-section {
        grid-template-columns: 1fr;
        padding: 22px;
    }

    .probability-section {
        padding: 22px;
    }

    .prediction-row {
        grid-template-columns: 72px minmax(0, 1fr) 48px;
        gap: 10px;
    }

    .submit-btn {
        width: 100%;
        justify-self: stretch;
    }
}