:root {
    --primary-bg: #020617;
    /* Slate-950 */
    --accent-color: #10b981;
    /* Emerald-500 */
    --accent-hover: #059669;
    /* Emerald-600 */
    --secondary-accent: #6366f1;
    /* Indigo-500 */
    --text-color: #e2e8f0;
    /* Slate-200 */
    --heading-color: #ffffff;
    /* White */
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(51, 65, 85, 0.5);
    --nav-bg: rgba(2, 6, 23, 0.7);
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --glow: 0 0 20px rgba(16, 185, 129, 0.3);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--primary-bg);
    background-image: radial-gradient(circle at 0% 0%, #1e1b4b 0%, transparent 50%);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Floating Navigation */
header {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    padding: 1rem 2rem;
    border-radius: 50px;
    z-index: 1000;
    width: 90%;
    max-width: 800px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    box-shadow: var(--shadow);
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--heading-color);
    margin: 0;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 0.2rem;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 140px 1rem 2rem;
    /* Top padding accounts for fixed header */
    animation: fadeIn 0.8s ease-out;
}

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

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

/* Glass Cards */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.6);
}

/* Upload Section */
.upload-section {
    text-align: center;
}

.drop-zone {
    border: 2px dashed var(--glass-border);
    border-radius: 20px;
    padding: 3rem 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.02);
}

.drop-zone:hover {
    border-color: var(--accent-color);
    background: rgba(16, 185, 129, 0.05);
    box-shadow: var(--glow);
}

.drop-zone .icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.2));
}

.preview-container {
    position: relative;
    margin-top: 1.5rem;
    display: inline-block;
}

#imagePreview {
    max-width: 100%;
    max-height: 400px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    border: 1px solid var(--glass-border);
}

.icon-btn {
    position: absolute;
    top: -15px;
    right: -15px;
    background: #ef4444;
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.4);
    transition: transform 0.2s;
}

.icon-btn:hover {
    transform: scale(1.1);
}

/* Buttons */
.controls {
    text-align: center;
    margin-bottom: 3rem;
}

.primary-btn {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: #ffffff;
    border: none;
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.primary-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.6);
}

.primary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: #334155;
    box-shadow: none;
}

/* Loading */
.loading {
    text-align: center;
    margin: 2rem 0;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(16, 185, 129, 0.1);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
    box-shadow: var(--glow);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

#loadingText {
    color: var(--accent-color);
    font-weight: 500;
    letter-spacing: 0.05em;
}

/* Results */
.model-output h2,
.report-output h2 {
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    color: var(--heading-color);
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 1rem;
}

.prob-row {
    margin-bottom: 1.2rem;
}

.prob-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.prob-bar-bg {
    background-color: rgba(255, 255, 255, 0.1);
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
}

.prob-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--secondary-accent));
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

/* Markdown Content */
.markdown-body {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-color);
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--heading-color);
}

.markdown-body strong {
    color: var(--accent-color);
}

.markdown-body p {
    margin-bottom: 1.2rem;
}

.markdown-body ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.markdown-body li {
    margin-bottom: 0.5rem;
}

/* Footer */
.disclaimer {
    text-align: center;
    font-size: 0.85rem;
    color: #64748b;
    margin-top: 4rem;
    padding: 1rem;
    border-top: 1px solid var(--glass-border);
}