:root {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

/* Dynamic Animated Blobs Background */
.background-blobs {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s infinite alternate;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: #4f46e5;
    top: -10%;
    left: -10%;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: #ec4899;
    bottom: -10%;
    right: -10%;
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) rotate(0deg) scale(1); }
    100% { transform: translate(100px, 50px) rotate(180deg) scale(1.2); }
}

/* Main Container */
.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

header {
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #a5b4fc, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

header p {
    color: #94a3b8;
    font-size: 1rem;
}

/* Glassmorphism Panels */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.glass-panel:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

/* Upload Area */
.upload-area {
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    height: 250px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.2);
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: #94a3b8;
}

.upload-placeholder svg {
    color: var(--primary-color);
    transition: var(--transition);
}

.upload-area:hover .upload-placeholder svg {
    transform: translateY(-5px);
}

.upload-placeholder span {
    color: var(--primary-color);
    font-weight: 600;
}

#image-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 14px;
    z-index: 2;
    position: absolute;
    top: 0;
    left: 0;
}

.hidden {
    display: none !important;
}

/* Buttons */
.primary-btn {
    width: 100%;
    padding: 1rem;
    margin-top: 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.primary-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -10px var(--primary-hover);
}

.primary-btn:disabled {
    background: #334155;
    color: #94a3b8;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Loading Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Results Section */
.result-section {
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-section h2 {
    font-size: 1.2rem;
    color: #cbd5e1;
    margin-bottom: 1.5rem;
    text-align: center;
}

.main-result {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.result-class {
    font-size: 3rem;
    font-weight: 700;
    color: #fff;
    text-transform: capitalize;
    background: linear-gradient(to right, #4facfe 0%, #00f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.result-confidence {
    color: #10b981;
    font-size: 1.1rem;
    font-weight: 500;
    background: rgba(16, 185, 129, 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    display: inline-block;
}

/* Top-K Bars */
.top-k-results h3 {
    font-size: 1rem;
    color: #94a3b8;
    margin-bottom: 1rem;
}

.bars-container {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.bar-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.bar-label {
    width: 80px;
    font-size: 0.9rem;
    color: #cbd5e1;
    text-transform: capitalize;
    text-align: right;
}

.bar-track {
    flex: 1;
    height: 12px;
    background: rgba(255,255,255,0.05);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #c084fc);
    border-radius: 6px;
    width: 0%;
    transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.bar-value {
    width: 45px;
    font-size: 0.8rem;
    color: #94a3b8;
    font-variant-numeric: tabular-nums;
}