/* Ultra-premium design with minimal light gradient + glassmorphism */

/* Background: white to light sky blue diagonal animation */
body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    background: linear-gradient(135deg, #ffffff, #e3f2fd);
    background-size: 400% 400%;
    animation: subtleSky 60s ease infinite;
    line-height: 1.6;
}

/* Slow gradient background animation */
@keyframes subtleSky {
    0% { background-position: 0% 0%; }
    50% { background-position: 100% 100%; }
    100% { background-position: 0% 0%; }
}

/* Glassmorphic container */
.container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 40px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.1);
    animation: fadeIn 1.2s ease forwards;
}

/* Fade-in effect */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
}
header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: #0d47a1;
}
header p {
    font-size: 1rem;
    color: #444;
}

/* Tabs Navigation */
.tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
    border-bottom: 2px solid #ddd;
}
.tab-btn {
    flex: 1;
    padding: 14px;
    cursor: pointer;
    border: none;
    background: none;
    font-weight: 600;
    transition: all 0.3s ease;
    color: #555;
}
.tab-btn.active {
    color: #0d47a1;
    border-bottom: 3px solid #0d47a1;
}
.tab-btn:hover {
    color: #1565c0;
}

/* Card Style */
.card {
    display: none;
    padding: 20px;
    animation: fadeIn 0.8s ease;
}
.card.active {
    display: block;
}

/* Inputs */
label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #333;
}

textarea, input[type="number"], input[type="file"] {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: 1px solid #ccc;
    outline: none;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.7);
    transition: all 0.4s ease;
}

/* Hover glow on input */
textarea:focus, input:focus {
    box-shadow: 0 0 10px rgba(33, 150, 243, 0.3);
    border-color: #2196f3;
}

/* Prediction Button */
button {
    display: block;
    width: 100%;
    padding: 14px;
    background: linear-gradient(270deg, #000000, #0d47a1);
    background-size: 400% 400%;
    animation: blackBlueShift 20s ease infinite;
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}

/* Gradient animation for button */
@keyframes blackBlueShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

/* Loader */
#loader {
    text-align: center;
    padding: 20px;
    font-style: italic;
    color: #0d47a1;
}

/* Results */
#results-area {
    margin-top: 30px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
}
th, td {
    padding: 14px;
    text-align: center;
    border-bottom: 1px solid #ddd;
    color: #333;
}
thead {
    background: #e3f2fd;
}
tbody tr:nth-child(even) {
    background: #f9f9f9;
}

/* Download button */
#download-btn {
    margin-top: 20px;
    padding: 12px;
    background: #0d47a1;
    border: none;
    border-radius: 12px;
    color: #fff;
    font-weight: 700;
    transition: all 0.3s ease;
}
#download-btn:hover {
    background: #1565c0;
    transform: translateY(-2px);
}

/* --- Force footer solid black on miRNA page --- */
#main-footer {
    background: #000 !important;  /* Override gradient bleed */
    color: #ccc;
}

#main-footer .container {
    background: none !important;  /* Remove glassmorphism inside footer */
    backdrop-filter: none !important;
    box-shadow: none !important;
}

/* Footer container should not use glassmorphism spacing */
#main-footer .container {
    max-width: 1200px;   /* matches your other pages */
    margin: 0 auto;
    padding: 20px;       /* reduced padding like homepage */
    background: none;    /* remove glass background */
    border-radius: 0;    /* remove rounded corners */
    box-shadow: none;
    backdrop-filter: none;
}