:root {
    --bg: #0a0a0a;
    --surface: #111;
    --accent: #4CAF50;
    --text: #eee;
    --text-dim: #888;
    --border: rgba(255,255,255,0.1);
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    background: 
        linear-gradient(rgba(10, 10, 10, 0.8), rgba(10, 10, 10, 0.8)),
        url('https://picsum.photos/1200/800') no-repeat center center fixed;
    background-size: cover;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

header#top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 5%;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

#language-select {
    background: transparent;
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
}

.btn-secondary {
    color: var(--text);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border);
    padding: 4px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--surface);
    border-color: var(--text-dim);
}

main.container {
    max-width: 900px;
    margin: 10px auto;
    padding: 20px;
    text-align: center;
    width: 90%;
    display: flex;
    flex-direction: column;
    flex: 1; /* This ensures the container takes up available space, pushing the footer down */
    overflow-y: auto; /* Enable internal scrolling if needed */
}

.hero-sub {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.7rem;
    margin-bottom: 5px;
}

h1 {
    font-weight: 900;
    font-size: clamp(1.8rem, 5vw, 3rem);
    line-height: 1;
    margin: 0 0 15px 0;
    letter-spacing: -0.04em;
}

.logo {
    height: 1.2em;
    vertical-align: middle;
    margin-right: 0.3em;
}

.hero-desc {
    color: var(--text-dim);
    font-size: 0.95rem;
    max-width: 600px;
    margin: 0 auto 20px auto;
    line-height: 1.4;
}

/* Stats Bar */
.stats-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    border: 1px solid var(--border);
    padding: 8px 25px;
    border-radius: 50px;
    background: rgba(255,255,255,0.03);
    backdrop-filter: blur(10px);
    margin: 0 auto 30px auto; /* Horizontal centering with auto margins */
    width: fit-content; /* Adapt width to content */
    max-width: 90%;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-val {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 0.9rem;
}

.stat-label {
    font-size: 0.55rem;
    text-transform: uppercase;
    color: var(--text-dim);
    letter-spacing: 1px;
}

/* Upload Area */
#drop-area {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px dashed var(--border);
    padding: 30px 20px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    flex-shrink: 0;
}

#upload-container {
    flex-shrink: 0;
}

#drop-area:hover, #drop-area.highlight {
    border-color: var(--accent);
    background: rgba(76, 175, 80, 0.05);
}

.btn-upload, .btn-primary {
    background: var(--accent);
    color: #000;
    font-weight: 700;
    padding: 10px 25px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: transform 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

/* Progress Bar */
#progress-bar {
    width: 100%;
    height: 4px;
    background: var(--surface);
    margin-top: 15px;
    border-radius: 2px;
    overflow: hidden;
    display: none;
}

/* History Grid / File Cards */
.section-title {
    text-align: left;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin: 30px 0 15px 0;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
    flex-shrink: 0;
}

.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
    text-align: left;
    padding-right: 5px;
}

/* Scrollbar styling */
.file-grid::-webkit-scrollbar { width: 4px; }
.file-grid::-webkit-scrollbar-track { background: transparent; }
.file-grid::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

.file-card {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 12px;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.file-card:hover {
    border-color: var(--text-dim);
    transform: translateY(-3px);
}

.tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    background: rgba(255,255,255,0.05);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent);
    margin-bottom: 8px;
    display: inline-block;
}

.file-card h3 {
    margin: 0 0 15px 0;
    font-size: 0.9rem;
    word-break: break-all;
    font-weight: 600;
}

.card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-link {
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 700;
}

.btn-delete {
    background: none;
    border: none;
    color: #f44336;
    cursor: pointer;
    font-size: 0.75rem;
    opacity: 0.5;
}

.btn-delete:hover { opacity: 1; }

/* Forms & Advanced Options */
.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-group label {
    font-size: 0.75rem;
    color: var(--text-dim);
    display: block;
    margin-bottom: 5px;
}

.form-group input, .form-group textarea, .form-group select {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px;
    border-radius: 6px;
    width: 100%;
    box-sizing: border-box;
    font-family: inherit;
    font-size: 1rem;
}

#advanced-options-toggle {
    margin-top: 15px;
    background: none;
    border: none;
    color: var(--text-dim);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    cursor: pointer;
    letter-spacing: 1px;
}

#advanced-options {
    background: rgba(255,255,255,0.02);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border);
    margin-top: 15px;
}

/* Modals */
.modal {
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--surface);
    width: 100%;
    max-width: 500px;
    padding: 30px;
    border-radius: 15px;
    border: 1px solid var(--border);
}

/* Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    margin-top: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
}

/* Accessibility */
*:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

footer {
    padding: 0 0 20px 0; /* Only keep bottom margin for breathing room */
    text-align: center;
    color: var(--text-dim);
    font-size: 0.7rem;
    font-family: 'JetBrains Mono', monospace;
    border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
    header#top-bar { flex-direction: column; gap: 15px; }
    .stats-bar { gap: 15px; padding: 10px 20px; flex-wrap: wrap; justify-content: center; }
}