:root {
    --primary-color: #1f8cff;
    --primary-strong: #0d6fd1;
    --background-color: #eef3f8;
    --container-bg: #ffffff;
    --card-bg: #f8fbff;
    --text-color: #122033;
    --muted-text: #4f637a;
    --border-color: #d2dfec;
    --shadow-color: rgba(10, 37, 64, 0.14);
    --focus-ring: rgba(31, 140, 255, 0.3);
    --result-bar-bg: #dce8f5;
    --result-bar-fill: #1f8cff;
}

html[data-theme='dark'] {
    --primary-color: #5ea6ff;
    --primary-strong: #7bb6ff;
    --background-color: #0e1520;
    --container-bg: #141f2e;
    --card-bg: #1b2a3d;
    --text-color: #edf4ff;
    --muted-text: #9bb2cd;
    --border-color: #2e425b;
    --shadow-color: rgba(0, 0, 0, 0.35);
    --focus-ring: rgba(94, 166, 255, 0.35);
    --result-bar-bg: #273a52;
    --result-bar-fill: #5ea6ff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 2.2rem 1rem;
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-color);
    background:
        radial-gradient(circle at 12% 20%, rgba(31, 140, 255, 0.14), transparent 28%),
        radial-gradient(circle at 88% 12%, rgba(255, 123, 66, 0.12), transparent 24%),
        var(--background-color);
}

.container {
    width: min(780px, 100%);
    background-color: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 18px 38px var(--shadow-color);
    padding: 1.4rem;
}

.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

h1 {
    margin: 0;
    font-size: 1.9rem;
    line-height: 1.2;
}

.subtitle {
    margin: 0.7rem 0 1.1rem;
    color: var(--muted-text);
}

#theme-toggle {
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    border-radius: 9px;
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
    cursor: pointer;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    margin-top: 1rem;
}

.card h2 {
    margin: 0 0 0.8rem;
    font-size: 1.15rem;
    color: var(--primary-strong);
}

#image-upload {
    position: absolute;
    left: -9999px;
}

.upload-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #fff;
    padding: 0.6rem 0.95rem;
    border-radius: 9px;
    font-weight: 600;
    cursor: pointer;
}

.status-message {
    margin: 0.7rem 0 0.8rem;
    color: var(--muted-text);
    font-size: 0.94rem;
}

.preview-frame {
    width: 100%;
    min-height: 240px;
    border: 1px dashed var(--border-color);
    border-radius: 10px;
    display: grid;
    place-items: center;
    overflow: hidden;
    background-color: var(--container-bg);
}

.preview-frame img {
    width: 100%;
    max-height: 360px;
    object-fit: contain;
    display: block;
}

.placeholder-text {
    margin: 0;
    color: var(--muted-text);
}

#predict-btn {
    margin-top: 0.9rem;
    border: none;
    background-color: var(--primary-color);
    color: #fff;
    padding: 0.7rem 1rem;
    border-radius: 9px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

#predict-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.top-result {
    margin: 0 0 1rem;
    font-size: 1.15rem;
    font-weight: 600;
}

.result-list {
    display: grid;
    gap: 0.75rem;
}

.result-row {
    display: grid;
    gap: 0.35rem;
}

.result-head {
    display: flex;
    justify-content: space-between;
    font-size: 0.94rem;
}

.result-bar {
    height: 10px;
    width: 100%;
    background-color: var(--result-bar-bg);
    border-radius: 999px;
    overflow: hidden;
}

.result-fill {
    height: 100%;
    width: 0;
    background-color: var(--result-bar-fill);
    transition: width 0.25s ease;
}

.comments-card {
    margin-top: 1.3rem;
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }

    .header-row {
        flex-direction: column;
        align-items: stretch;
    }

    #theme-toggle {
        width: 100%;
    }

    h1 {
        font-size: 1.6rem;
    }
}