:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --accent: #f43f5e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    background: radial-gradient(circle at top right, #1e1b4b, #0f172a);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

.container {
    width: 100%;
    max-width: 900px;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-dim);
    font-size: 1.1rem;
}

.main-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: scaleUp 0.6s ease-out;
}

.upload-area {
    border: 2px dashed #475569;
    border-radius: 1rem;
    padding: 3rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.prediction-results {
    margin-top: 2rem;
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.image-preview {
    max-width: 256px;
    border-radius: 0.75rem;
    margin: 0 auto 1.5rem;
    display: block;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

.class-tag {
    background: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.confidence-bar-container {
    height: 8px;
    background: #1e293b;
    border-radius: 1rem;
    overflow: hidden;
    margin-top: 0.5rem;
}

.confidence-bar {
    height: 100%;
    background: linear-gradient(to right, #6366f1, #a855f7);
    width: 0%;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleUp {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.hidden {
    display: none;
}

button#predict-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 1.5rem;
    width: 100%;
}

button#predict-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.4);
}

button#predict-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}