:root {
    --bg: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.9);
    --primary: #4f46e5;
    --primary-glow: rgba(79, 70, 229, 0.15);
    --success: #059669;
    --danger: #dc2626;
    --text-main: #0f172a;
    --text-dim: #64748b;
    --border: rgba(0, 0, 0, 0.08);
}

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

body {
    background-color: var(--bg);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    background-image:
        radial-gradient(at 0% 0%, hsla(244, 83%, 58%, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 0%, hsla(160, 83%, 58%, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, hsla(244, 83%, 58%, 0.05) 0px, transparent 50%),
        radial-gradient(at 0% 100%, hsla(190, 83%, 58%, 0.05) 0px, transparent 50%);
}

.app-container {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Header */
.header {
    text-align: center;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo i {
    color: var(--primary);
    font-size: 1.75rem;
}

/* Main Card */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 32px;
    padding: 3rem;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
    min-height: 450px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    box-shadow:
        0 30px 60px -12px rgba(0, 0, 0, 0.15),
        0 0 20px rgba(79, 70, 229, 0.05);
}

.state-content {
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* Hero Section */
.hero-text {
    text-align: center;
    margin-bottom: 2rem;
}

.hero-text h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.hero-text p {
    color: var(--text-dim);
    font-size: 0.95rem;
}

/* Upload Box */
.upload-box {
    border: 2px dashed rgba(0, 0, 0, 0.1);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    transition: 0.3s;
    cursor: pointer;
}

.upload-box:hover {
    border-color: var(--primary);
    background: rgba(79, 70, 229, 0.02);
}

.upload-icon {
    width: 64px;
    height: 64px;
    background: rgba(79, 70, 229, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--primary);
    font-size: 1.5rem;
}

.upload-box h3 {
    margin-bottom: 0.5rem;
}

.upload-box p {
    color: var(--text-dim);
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
}

/* Analysis State */
.preview-area {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 2rem;
    aspect-ratio: 1;
    background: #000;
}

.preview-area img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0.6;
}

.scan-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    box-shadow: 0 0 20px var(--primary), 0 0 40px var(--primary);
    animation: scan 2.5s infinite cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
}

@keyframes scan {
    0% {
        top: 0%;
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        top: 100%;
        opacity: 0;
    }
}

.loader-container {
    text-align: center;
    padding: 1rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s infinite linear;
    margin: 0 auto 1rem;
}

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

.pulse-text {
    animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.7;
        transform: scale(0.98);
    }
}

/* Results State */
.result-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.result-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: var(--success);
}

.result-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
}

.result-header p {
    color: var(--text-dim);
    font-weight: 500;
}

.result-details {
    margin-bottom: 2.5rem;
}

.prob-row {
    margin-bottom: 1.5rem;
}

.prob-row span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 0.5rem;
}

.progress-bg {
    height: 8px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.25rem;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.val {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-main);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 16px;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px var(--primary-glow);
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: rotate(45deg);
    transition: 0.5s;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 25px var(--primary-glow);
}

.btn-primary:hover::after {
    left: 100%;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: 0.3s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Footer */
.footer {
    text-align: center;
    color: var(--text-dim);
    font-size: 0.8rem;
}

@media (max-width: 480px) {
    .glass-card {
        padding: 1.5rem;
    }

    .app-container {
        padding: 1rem;
    }
}