:root {
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --border-color: #334155;
    --text-primary: #f8fafc;
    --text-muted: #94a3b8;
    --accent-blue: #1982fc;
    --accent-blue-hover: #0b69d4;
    --accent-green: #00b37e;
    --accent-green-hover: #008f64;
    --danger: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.auth-wrapper {
    display: flex;
    height: 100%;
    width: 100%;
}

.auth-brand-side {
    position: relative;
    flex: 1.3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 60px;
    background: radial-gradient(circle at top left, #102a43, #0f172a);
}

.brand-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="30" height="30" viewBox="0 0 30 30"><rect width="30" height="30" fill="none" stroke="rgba(255,255,255,0.02)" stroke-width="1"/></svg>');
    z-index: 1;
}

.brand-content {
    position: relative;
    z-index: 2;
    max-width: 520px;
}

.brand-badge {
    display: inline-block;
    padding: 6px 12px;
    background-color: rgba(25, 130, 252, 0.15);
    border: 1px solid rgba(25, 130, 252, 0.3);
    color: var(--accent-blue);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    border-radius: 4px;
    margin-bottom: 24px;
    text-transform: uppercase;
}

.brand-content h1 {
    font-size: 34px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    color: #ffffff;
}

.brand-content p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.6;
}

.auth-form-side {
    flex: 1;
    background-color: var(--bg-main);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px;
    border-left: 1px solid var(--border-color);
}

.auth-box {
    width: 100%;
    max-width: 380px;
}

.auth-header {
    margin-bottom: 32px;
}

.auth-header h2 {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 6px;
    color: #ffffff;
}

.auth-header p {
    color: var(--text-muted);
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    color: var(--text-muted);
}

.form-control, input[type="email"], input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s ease;
}

.form-control:focus, input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(25, 130, 252, 0.15);
}

.btn {
    display: block;
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease;
    margin-top: 10px;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--accent-blue-hover);
}

.btn-success {
    background-color: var(--accent-green);
    color: #fff;
}

.btn-success:hover {
    background-color: var(--accent-green-hover);
}

.alert {
    padding: 12px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
    line-height: 1.5;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.alert-success {
    background-color: rgba(0, 179, 126, 0.1);
    border: 1px solid rgba(0, 179, 126, 0.2);
    color: var(--accent-green);
}

.auth-footer {
    text-align: center;
    margin-top: 28px;
    font-size: 14px;
    color: var(--text-muted);
}

.auth-footer a {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ==========================================
   QR DROP ZONE STYLING
   ========================================== */
#drop-zone {
    border: 2px dashed var(--border-color);
    padding: 24px;
    text-align: center;
    border-radius: 6px;
    background-color: var(--bg-card);
    cursor: pointer;
    margin-bottom: 24px;
    transition: all 0.2s ease-in-out;
}

/* Visual cue when dragging or hovering */
#drop-zone:hover {
    border-color: var(--accent-blue);
    background-color: rgba(25, 130, 252, 0.04);
}

#drop-zone span {
    font-size: 26px;
    display: block;
    margin-bottom: 8px;
}

#drop-zone p {
    margin: 0;
}

@media (max-width: 900px) {
    .auth-brand-side { display: none; }
    .auth-form-side { border-left: none; width: 100%; }
}