:root {
    --primary: #8b5cf6;
    --primary-hover: #7c3aed;
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --error: #ef4444;
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: radial-gradient(circle at top right, #1e1b4b, #0f172a);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    padding: 40px;
    width: 100%;
    max-width: 600px;
    transition: transform 0.3s ease;
}

.hidden { display: none !important; }

/* Login Styling */
.title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
    background: linear-gradient(to right, #c084fc, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

input[type="text"], input[type="password"] {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

input:focus { border-color: var(--primary); }

.primary-btn {
    width: 100%;
    padding: 16px;
    background: var(--primary);
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.primary-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(139, 92, 246, 0.3);
}

.primary-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Dashboard Styling */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.header .title {
    margin-bottom: 0;
    font-size: 1.5rem;
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.2s;
}

.secondary-btn:hover { background: rgba(255, 255, 255, 0.15); }

.upload-area {
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    margin-bottom: 25px;
    transition: all 0.3s;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary);
    background: rgba(139, 92, 246, 0.05);
}

.upload-icon {
    font-size: 40px;
    margin-bottom: 15px;
    opacity: 0.5;
}

.batch-control {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.03);
    padding: 15px;
    border-radius: 16px;
}

.file-list {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 25px;
    padding-right: 10px;
}

.file-list::-webkit-scrollbar { width: 6px; }
.file-list::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 10px; }

.status-bar {
    margin-top: 20px;
    padding: 12px;
    border-radius: 10px;
    font-size: 0.9rem;
    text-align: center;
}

.status-info { background: rgba(139, 92, 246, 0.1); color: #c084fc; }
.status-success { background: rgba(34, 197, 94, 0.1); color: #4ade80; }
.status-error { background: rgba(239, 68, 68, 0.1); color: #f87171; }
.error-msg { color: var(--error); font-size: 0.85rem; margin-top: 10px; text-align: center; }