:root {
    --bg-dark: #09090b;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent-glow: #0ea5e9;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', system-ui, sans-serif; }

body {
    background-color: var(--bg-dark);
    background-image: radial-gradient(circle at 15% 50%, rgba(14, 165, 233, 0.15), transparent 25%),
                      radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.15), transparent 25%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 800px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.1);
}

h1 { font-size: 2.5rem; margin-bottom: 10px; font-weight: 700; }
.text-gradient {
    background: linear-gradient(to right, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p { color: var(--text-muted); margin-bottom: 30px; line-height: 1.6; }

.form-group { margin-bottom: 25px; }
label { display: block; margin-bottom: 8px; font-size: 0.9rem; font-weight: 500; letter-spacing: 0.5px; }

input[type="text"], input[type="file"] {
    width: 100%;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-main);
    transition: all 0.3s ease;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-glow);
    box-shadow: 0 0 15px rgba(14, 165, 233, 0.2);
}

.btn-primary {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #0ea5e9, #3b82f6);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(14, 165, 233, 0.3);
}

/* Loading Overlay */
#loader {
    display: none;
    text-align: center;
    margin-top: 20px;
}
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--glass-border);
    border-top-color: var(--accent-glow);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }