:root {
            --primary: #6C63FF;
            --primary-dark: #5A52E0;
            --primary-light: #EEF0FF;
            --accent: #FF6584;
            --success: #00C48C;
            --warning: #FFB800;
            --danger: #FF4C4C;
            --dark: #1A1A2E;
            --text: #323338;
            --text-secondary: #676879;
            --border: #E6E9EF;
            --bg: #F7F8FC;
            --white: #FFFFFF;
            --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,.08);
            --shadow-lg: 0 12px 40px rgba(108,99,255,.15);
            --radius: 10px;
            --radius-lg: 16px;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg);
            color: var(--text);
            min-height: 100vh;
            display: flex;
        }

        /* ── LAYOUT ── */
        .page-wrapper {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }

        /* ── LEFT HERO PANEL ── */
        .hero-panel {
            flex: 1.1;
            background: linear-gradient(145deg, #1A1A2E 0%, #16213E 40%, #0F3460 100%);
            padding: 48px 52px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            position: relative;
            overflow: hidden;
        }

        .hero-panel::before {
            content: '';
            position: absolute;
            top: -120px; right: -120px;
            width: 480px; height: 480px;
            background: radial-gradient(circle, rgba(108,99,255,.35) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-panel::after {
            content: '';
            position: absolute;
            bottom: -100px; left: -80px;
            width: 360px; height: 360px;
            background: radial-gradient(circle, rgba(255,101,132,.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            z-index: 1;
        }

        .brand-icon {
            width: 40px; height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex; align-items: center; justify-content: center;
            font-size: 20px;
            box-shadow: 0 4px 16px rgba(108,99,255,.4);
        }

        .brand-name {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .hero-content {
            z-index: 1;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 40px 0;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(108,99,255,.2);
            border: 1px solid rgba(108,99,255,.3);
            color: #a9a4ff;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .5px;
            text-transform: uppercase;
            padding: 6px 14px;
            border-radius: 100px;
            margin-bottom: 28px;
            width: fit-content;
        }

        .hero-title {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }

        .hero-title span {
            background: linear-gradient(135deg, #a9a4ff, #ff6584);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 15px;
            color: rgba(255,255,255,.65);
            line-height: 1.7;
            max-width: 380px;
            margin-bottom: 48px;
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .feature-icon {
            width: 44px; height: 44px;
            border-radius: 12px;
            display: flex; align-items: center; justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .feature-icon.purple { background: rgba(108,99,255,.2); }
        .feature-icon.pink   { background: rgba(255,101,132,.2); }
        .feature-icon.teal   { background: rgba(0,196,140,.2); }

        .feature-text h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 3px;
        }

        .feature-text p {
            font-size: 13px;
            color: rgba(255,255,255,.55);
            line-height: 1.5;
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            z-index: 1;
        }

        .stat {
            text-align: left;
        }

        .stat-value {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .stat-label {
            font-size: 12px;
            color: rgba(255,255,255,.5);
            margin-top: 2px;
        }

        /* ── RIGHT AUTH PANEL ── */
        .auth-panel {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 40px 48px;
            background: var(--white);
            overflow-y: auto;
        }

        .auth-box {
            width: 100%;
            max-width: 420px;
        }

        /* ── SCREENS ── */
        .screen { display: none; }
        .screen.active {
            display: block;
            animation: slideUp .3s cubic-bezier(.22,.61,.36,1);
        }

        @keyframes slideUp {
            from { opacity: 0; transform: translateY(16px); }
            to   { opacity: 1; transform: translateY(0); }
        }

        /* ── SCREEN HEADER ── */
        .screen-header { margin-bottom: 32px; }
        .screen-header .eyebrow {
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: .6px;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .screen-header h1 {
            font-size: 26px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
            margin-bottom: 6px;
        }
        .screen-header p {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ── OAUTH ── */
        .oauth-row {
            display: flex;
            gap: 10px;
            margin-bottom: 24px;
        }

        .oauth-btn {
            flex: 1;
            padding: 11px 16px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius);
            background: var(--white);
            cursor: pointer;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all .2s ease;
        }

        .oauth-btn:hover {
            border-color: var(--primary);
            background: var(--primary-light);
            color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .oauth-btn .fab.fa-google  { color: #EA4335; }
        .oauth-btn .fab.fa-microsoft { color: #0078D4; }

        /* ── DIVIDER ── */
        .divider {
            display: flex;
            align-items: center;
            gap: 12px;
            margin: 20px 0;
        }
        .divider::before, .divider::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border);
        }
        .divider span {
            font-size: 12px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ── FORM ELEMENTS ── */
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .field {
            margin-bottom: 16px;
        }

        .field label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 7px;
        }

        .field input,
        .field select {
            width: 100%;
            padding: 11px 14px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius);
            font-size: 14px;
            font-family: inherit;
            color: var(--text);
            background: var(--white);
            transition: all .2s ease;
            -webkit-appearance: none;
        }

        .field input::placeholder { color: #B0B3C1; }

        .field input:focus,
        .field select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(108,99,255,.12);
        }

        .field .hint {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 5px;
        }

        .field .hint.error-hint { color: var(--danger); }

        /* Password toggle */
        .input-with-icon {
            position: relative;
        }
        .input-with-icon input { padding-right: 44px; }
        .input-with-icon .toggle-pw {
            position: absolute;
            right: 14px; top: 50%;
            transform: translateY(-50%);
            background: none; border: none;
            cursor: pointer;
            color: var(--text-secondary);
            font-size: 14px;
            padding: 0;
        }
        .input-with-icon .toggle-pw:hover { color: var(--primary); }

        /* Password strength */
        .pw-strength {
            margin-top: 8px;
        }
        .pw-strength-bar {
            height: 4px;
            border-radius: 100px;
            background: var(--border);
            overflow: hidden;
            margin-bottom: 4px;
        }
        .pw-strength-fill {
            height: 100%;
            border-radius: 100px;
            width: 0;
            transition: all .3s ease;
        }
        .pw-strength-label { font-size: 11px; color: var(--text-secondary); }

        /* ── BUTTONS ── */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 24px;
            border: none;
            border-radius: var(--radius);
            font-size: 14px;
            font-weight: 700;
            font-family: inherit;
            cursor: pointer;
            transition: all .2s ease;
            width: 100%;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            box-shadow: 0 4px 14px rgba(108,99,255,.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108,99,255,.45);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-primary:disabled {
            background: #C8CAD8;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
        }

        .btn-ghost {
            background: var(--bg);
            color: var(--text);
            border: 1.5px solid var(--border);
        }
        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .btn-row {
            display: flex;
            gap: 10px;
            margin-top: 8px;
        }

        /* ── BACK LINK ── */
        .back-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            cursor: pointer;
            margin-bottom: 24px;
            transition: color .2s;
            background: none;
            border: none;
            padding: 0;
            font-family: inherit;
        }
        .back-btn:hover { color: var(--primary); }

        /* ── STEP INDICATOR ── */
        .steps-bar {
            display: flex;
            align-items: center;
            gap: 0;
            margin-bottom: 32px;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .step-item:not(:last-child)::after {
            content: '';
            flex: 1;
            height: 2px;
            background: var(--border);
            margin: 0 8px;
            transition: background .3s;
        }
        .step-item.done:not(:last-child)::after { background: var(--primary); }

        .step-circle {
            width: 28px; height: 28px;
            border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            font-size: 12px;
            font-weight: 700;
            border: 2px solid var(--border);
            color: var(--text-secondary);
            transition: all .3s ease;
            background: var(--white);
            flex-shrink: 0;
        }
        .step-item.active .step-circle {
            border-color: var(--primary);
            background: var(--primary);
            color: #fff;
        }
        .step-item.done .step-circle {
            border-color: var(--primary);
            background: var(--primary-light);
            color: var(--primary);
        }
        .step-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .step-item.active .step-label { color: var(--primary); }

        /* ── MODULE GRID ── */
        .modules-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            margin-bottom: 20px;
        }

        .module-card {
            position: relative;
            padding: 16px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius);
            cursor: pointer;
            transition: all .2s ease;
            background: var(--white);
        }

        .module-card input[type="checkbox"] {
            position: absolute;
            opacity: 0; pointer-events: none;
        }

        .module-card:hover { border-color: var(--primary); background: var(--primary-light); }

        .module-card.selected {
            border-color: var(--primary);
            background: var(--primary-light);
        }

        .module-card.selected .check-badge { display: flex; }

        .check-badge {
            display: none;
            position: absolute;
            top: 8px; right: 8px;
            width: 18px; height: 18px;
            background: var(--primary);
            border-radius: 50%;
            align-items: center; justify-content: center;
            color: #fff;
            font-size: 10px;
        }

        .module-emoji { font-size: 22px; margin-bottom: 6px; }

        .module-name {
            font-size: 13px;
            font-weight: 700;
            color: var(--dark);
        }

        .module-desc {
            font-size: 11px;
            color: var(--text-secondary);
            margin-top: 2px;
        }

        /* ── ALERT ── */
        .alert {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 12px 14px;
            border-radius: var(--radius);
            font-size: 13px;
            margin-bottom: 16px;
            line-height: 1.5;
        }
        .alert i { margin-top: 1px; flex-shrink: 0; }
        .alert.error   { background: #FFF0F0; color: #CC2222; border: 1px solid #FFCCCC; }
        .alert.success { background: #EDFAF5; color: #00875A; border: 1px solid #C3F0DE; }
        .alert.info    { background: var(--primary-light); color: var(--primary); border: 1px solid rgba(108,99,255,.2); }

        /* ── SPINNER ── */
        @keyframes spin { to { transform: rotate(360deg); } }
        .spinner {
            width: 16px; height: 16px;
            border: 2px solid rgba(255,255,255,.4);
            border-top-color: #fff;
            border-radius: 50%;
            animation: spin .7s linear infinite;
        }

        /* ── FOOTER LINKS ── */
        .auth-footer {
            text-align: center;
            margin-top: 24px;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .auth-footer a {
            color: var(--primary);
            font-weight: 600;
            text-decoration: none;
        }
        .auth-footer a:hover { text-decoration: underline; }

        /* ── WELCOME CARDS ── */
        .action-cards {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 24px;
        }

        .action-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-lg);
            cursor: pointer;
            transition: all .2s ease;
            background: var(--white);
            text-align: left;
            width: 100%;
            font-family: inherit;
        }

        .action-card:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .action-card.primary-card {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-color: transparent;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .action-card.primary-card:hover {
            box-shadow: 0 16px 48px rgba(108,99,255,.3);
        }

        .action-card-icon {
            width: 44px; height: 44px;
            border-radius: 12px;
            display: flex; align-items: center; justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .action-card.primary-card .action-card-icon {
            background: rgba(255,255,255,.2);
        }
        .action-card:not(.primary-card) .action-card-icon {
            background: var(--primary-light);
        }

        .action-card-text { flex: 1; }
        .action-card-title {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .action-card-subtitle {
            font-size: 12px;
            opacity: .7;
        }
        .action-card-arrow { font-size: 16px; opacity: .5; }

        /* ── FORGOT / REMEMBER ── */
        .form-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .remember-me {
            display: flex;
            align-items: center;
            gap: 7px;
            font-size: 13px;
            color: var(--text-secondary);
            cursor: pointer;
        }
        .remember-me input[type="checkbox"] {
            width: 16px; height: 16px;
            accent-color: var(--primary);
            cursor: pointer;
        }
        .forgot-link {
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
        }
        .forgot-link:hover { text-decoration: underline; }

        /* ── RESPONSIVE ── */
        @media (max-width: 1100px) {
            .hero-title { font-size: 32px; }
            .hero-panel { padding: 40px 40px; }
            .auth-panel { padding: 40px 36px; }
        }

        @media (max-width: 860px) {
            .page-wrapper { flex-direction: column; }
            .hero-panel {
                flex: none;
                padding: 32px 28px;
            }
            .hero-content { padding: 24px 0; }
            .hero-title { font-size: 26px; }
            .feature-list { flex-direction: row; flex-wrap: wrap; gap: 12px; }
            .feature-item { flex: 1 1 calc(50% - 6px); }
            .hero-stats { display: none; }
            .auth-panel { padding: 32px 24px; }
        }

        @media (max-width: 500px) {
            .form-row { grid-template-columns: 1fr; }
            .modules-grid { grid-template-columns: 1fr; }
            .steps-bar .step-label { display: none; }
            .oauth-row { flex-direction: column; }
        }