/* ═══════════════════════════════════════════════════════════
   CIFAR-10 Image Classifier — Flask App Styles
   Modern, premium design with glassmorphism and gradients
   ═══════════════════════════════════════════════════════════ */

:root {
    --primary: #6C5CE7;
    --primary-light: #A29BFE;
    --secondary: #B388FF;
    --accent: #CE93D8;
    --grape: #7C4DFF;
    --grape-light: #B47CFF;
    --grape-glow: rgba(124, 77, 255, 0.25);
    --bg-dark: #0c0c1d;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --text: #E8E8F0;
    --text-muted: #9B9BB0;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --radius: 16px;
    --radius-sm: 8px;
    --section-gap: 40px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(108, 92, 231, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(124, 77, 255, 0.10) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(179, 136, 255, 0.08) 0%, transparent 50%);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* ─── Header ──────────────────────────────────────────── */

.header {
    text-align: center;
    margin-bottom: var(--section-gap);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--section-gap);
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--grape-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.model-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--grape));
    color: white;
    padding: 2px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.class-tags {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-top: 0;
}

.tags-row {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(124, 77, 255, 0.08);
    border: 1px solid rgba(124, 77, 255, 0.2);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--primary-light);
    transition: all 0.2s ease;
}

.tag:hover {
    background: rgba(124, 77, 255, 0.15);
    color: var(--text);
    border-color: var(--grape);
    transform: translateY(-1px);
    box-shadow: 0 2px 12px var(--grape-glow);
}

/* ─── Model Selection ────────────────────────────────── */

.model-selection {
    margin-bottom: var(--section-gap);
    text-align: center;
}

.model-label {
    font-weight: 500;
    font-size: 13px;
    color: var(--text-muted);
    margin-right: 8px;
}

.model-select {
    padding: 5px 10px;
    border-radius: 6px;
    border: 1px solid var(--grape);
    background: rgba(124, 77, 255, 0.08);
    backdrop-filter: blur(10px);
    color: var(--text);
    font-family: inherit;
    font-size: 13px;
    cursor: pointer;
    outline: none;
    transition: all 0.2s ease;
}

.model-select:hover {
    border-color: var(--grape-light);
    box-shadow: 0 0 0 2px var(--grape-glow);
}

.model-select:focus {
    border-color: var(--grape-light);
    box-shadow: 0 0 0 2px var(--grape-glow);
}

/* ─── Upload Section ──────────────────────────────────── */

.upload-section {
    margin-bottom: var(--section-gap);
}

.dropzone {
    background: var(--bg-card);
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 35px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.dropzone:hover,
.dropzone.dragover {
    border-color: var(--grape);
    background: rgba(124, 77, 255, 0.08);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--grape-glow);
}

.dropzone-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 12px;
}

.dropzone-text {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text);
}

.dropzone-subtext {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-list {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.file-item {
    background: var(--bg-card);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.submit-btn {
    display: block;
    width: 100%;
    margin-top: 20px;
    padding: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--grape));
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px var(--grape-glow);
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(124, 77, 255, 0.4);
}

.submit-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-icon {
    margin-right: 6px;
}

/* ─── Results Section ─────────────────────────────────── */

.results-section {
    margin-bottom: var(--section-gap);
}

.results-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 24px;
    text-align: center;
}

.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease;
}

.result-card:hover {
    transform: translateY(-2px);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 8px;
}

.filename {
    font-weight: 500;
    font-size: 0.95rem;
}

.top-prediction {
    background: linear-gradient(135deg, rgba(124, 77, 255, 0.15), rgba(179, 136, 255, 0.05));
    border: 1px solid rgba(124, 77, 255, 0.3);
    color: var(--grape-light);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
}

.predictions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.prediction-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pred-class {
    width: 100px;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: right;
    color: var(--text-muted);
}

.prob-bar-container {
    flex: 1;
    height: 24px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.prob-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--grape));
    border-radius: 12px;
    min-width: 2px;
    transition: width 0.8s ease;
}

.pred-prob {
    width: 60px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-light);
    text-align: right;
}

.error-msg {
    color: #ef9a9a;
    padding: 12px;
    background: rgba(239, 154, 154, 0.1);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(239, 154, 154, 0.2);
}

/* ─── Footer ──────────────────────────────────────────── */

.footer {
    text-align: center;
    padding-top: var(--section-gap);
    margin-top: var(--section-gap);
    border-top: 1px solid rgba(124, 77, 255, 0.15);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ─── Responsive ──────────────────────────────────────── */

@media (max-width: 600px) {
    .header h1 {
        font-size: 1.5rem;
    }

    .result-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .pred-class {
        width: 80px;
        font-size: 0.8rem;
    }

    .dropzone {
        padding: 30px 16px;
    }
}