:root {
            --bg-primary: #0a0a0f;
            --bg-secondary: #12121a;
            --bg-tertiary: #1a1a25;
            --bg-card: #16161f;
            --text-primary: #ffffff;
            --text-secondary: #a1a1aa;
            --text-muted: #71717a;
            --accent-primary: #7c3aed;
            --accent-pink: #ec4899;
            --accent-cyan: #06b6d4;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-subtle: rgba(255, 255, 255, 0.04);
            --nav-bg: rgba(10, 10, 15, 0.8);
            --shadow: rgba(0, 0, 0, 0.5);
            --gradient-primary: linear-gradient(135deg, var(--accent-primary), var(--accent-pink));
            --gradient-dark: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
        }

        [data-theme="light"] {
            --bg-primary: #ffffff;
            --bg-secondary: #f8f9fa;
            --bg-tertiary: #f1f3f5;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a5568;
            --text-muted: #718096;
            --accent-primary: #7c3aed;
            --accent-pink: #ec4899;
            --accent-cyan: #06b6d4;
            --border-color: rgba(0, 0, 0, 0.1);
            --border-subtle: rgba(0, 0, 0, 0.08);
            --nav-bg: rgba(255, 255, 255, 0.9);
            --shadow: rgba(0, 0, 0, 0.1);
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
        }

        .page-wrapper {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* Main Content */
        .main {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 60px;
            position: relative;
            overflow: hidden;
        }

        .main::before {
            content: '';
            position: absolute;
            top: 20%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .register-card {
            width: 100%;
            max-width: 420px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
            position: relative;
            z-index: 1;
            box-shadow: 0 20px 60px var(--shadow);
        }

        .register-header {
            text-align: center;
            margin-bottom: 32px;
        }

        .register-header h1 {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .register-header p {
            color: var(--text-secondary);
            font-size: 15px;
        }

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

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 8px;
            color: var(--text-secondary);
        }

        .form-input {
            width: 100%;
            padding: 14px 16px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            font-size: 15px;
            color: var(--text-primary);
            transition: all 0.2s;
            font-family: inherit;
        }

        .form-input::placeholder {
            color: var(--text-muted);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
        }

        .input-with-icon {
            position: relative;
        }

        .input-with-icon .form-input {
            padding-right: 44px;
        }

        .input-with-icon .input-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            cursor: pointer;
        }

        .input-with-icon .input-icon svg {
            width: 18px;
            height: 18px;
        }

        .checkbox-group {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 24px;
        }

        .checkbox-group input[type="checkbox"] {
            width: 18px;
            height: 18px;
            margin-top: 2px;
            accent-color: var(--accent-primary);
            cursor: pointer;
            flex-shrink: 0;
        }

        .checkbox-group label {
            font-size: 14px;
            color: var(--text-secondary);
            cursor: pointer;
            line-height: 1.5;
        }

        .checkbox-group a {
            color: var(--accent-primary);
            text-decoration: none;
        }

        .checkbox-group a:hover {
            text-decoration: underline;
        }

        .btn {
            width: 100%;
            padding: 14px 24px;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            font-family: inherit;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(124, 58, 237, 0.45);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .divider {
            display: flex;
            align-items: center;
            gap: 16px;
            margin: 28px 0;
        }

        .divider::before,
        .divider::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border-color);
        }

        .divider span {
            font-size: 13px;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .social-buttons {
            display: flex;
            gap: 12px;
        }

        .btn-social {
            flex: 1;
            padding: 12px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            color: var(--text-primary);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: inherit;
        }

        .btn-social:hover {
            background: var(--bg-tertiary);
            border-color: var(--accent-primary);
        }

        .btn-social svg {
            width: 20px;
            height: 20px;
        }

        .register-footer {
            text-align: center;
            margin-top: 28px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }

        .register-footer p {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .register-footer a {
            color: var(--accent-primary);
            text-decoration: none;
            font-weight: 600;
        }

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

        /* Error message */
        .error-message {
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.2);
            color: #ef4444;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 14px;
            margin-bottom: 20px;
            display: none;
        }

        .error-message.show {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Success message */
        .success-message {
            background: rgba(34, 197, 94, 0.1);
            border: 1px solid rgba(34, 197, 94, 0.2);
            color: #22c55e;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 14px;
            margin-bottom: 20px;
            display: none;
        }

        .success-message.show {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Password strength */
        .password-strength {
            margin-top: 8px;
        }

        .strength-bar {
            height: 4px;
            background: var(--bg-tertiary);
            border-radius: 2px;
            overflow: hidden;
            margin-bottom: 6px;
        }

        .strength-bar-fill {
            height: 100%;
            border-radius: 2px;
            transition: width 0.3s, background 0.3s;
            width: 0;
        }

        .strength-bar-fill.weak {
            width: 33%;
            background: #ef4444;
        }

        .strength-bar-fill.medium {
            width: 66%;
            background: #f59e0b;
        }

        .strength-bar-fill.strong {
            width: 100%;
            background: #22c55e;
        }

        .strength-text {
            font-size: 12px;
            color: var(--text-muted);
        }

        @media (max-width: 480px) {
            .register-card {
                padding: 28px 20px;
            }

            .register-header h1 {
                font-size: 24px;
            }

            .social-buttons {
                flex-direction: column;
            }
        }