:root {
    --primary-color: #2563eb;
    /* Blue like in screenshot */
    --secondary-color: #457b9d;
    --background-color: #f3f4f6;
    /* Light gray background */
    --text-color: #1f2937;
    --card-bg: #ffffff;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --nav-height: 60px;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background-color: var(--card-bg);
    height: var(--nav-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 50px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-links a {
    text-decoration: none;
    color: #4b5563;
    margin-left: 20px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
    min-height: calc(100vh - var(--nav-height) - 100px);
    /* Adjust for footer */
}

header {
    text-align: center;
    margin-bottom: 40px;
}

h1 {
    color: #111827;
    margin-bottom: 10px;
    font-size: 2.2rem;
}

header p {
    color: #6b7280;
    font-size: 1.1rem;
}

.upload-section {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    margin-bottom: 30px;
    text-align: center;
}

.file-input-wrapper {
    margin-bottom: 25px;
}

input[type="file"] {
    display: none;
}

.file-label {
    display: inline-block;
    padding: 12px 24px;
    background-color: #f3f4f6;
    color: #374151;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    max-width: 400px;
    text-align: left;
    display: flex;
    align-items: center;
    margin: 0 auto;
}

.file-label::before {
    content: "Choose File";
    background-color: #e5e7eb;
    padding: 4px 12px;
    border-radius: 4px;
    margin-right: 10px;
    font-size: 0.9em;
    font-weight: 500;
    border: 1px solid #d1d5db;
}

.file-label:hover {
    background-color: #e5e7eb;
}

button#predictBtn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 40px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
    width: 100%;
    max-width: 400px;
}

button#predictBtn:hover {
    background-color: #1d4ed8;
}

#preview-section {
    text-align: center;
    margin: 30px 0;
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

#imagePreview {
    max-width: 100%;
    max-height: 250px;
    border-radius: 8px;
}

.hidden {
    display: none;
}

#loading {
    text-align: center;
    margin: 20px 0;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

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

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

#results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.result-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border-left: none;
    /* Removed colored border */
}

.result-title {
    font-size: 1.1em;
    font-weight: 700;
    margin-bottom: 15px;
    color: #111827;
    border-bottom: 2px solid #f3f4f6;
    padding-bottom: 10px;
}

.prob-bar {
    background-color: #e5e7eb;
    height: 8px;
    border-radius: 4px;
    margin-top: 8px;
    overflow: hidden;
}

.prob-fill {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 4px;
}

footer {
    text-align: center;
    padding: 30px 0;
    color: #9ca3af;
    font-size: 0.9em;
    margin-top: auto;
}