:root {
            --bg-primary: #0a0e17;
            --bg-secondary: #111827;
            --bg-card: #1a1f2e;
            --bg-card-hover: #1f2937;
            --accent: #3b82f6;
            --accent-hover: #2563eb;
            --accent-glow: rgba(59, 130, 246, 0.35);
            --text-primary: #e2e8f0;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border: #1e293b;
            --border-focus: #3b82f6;
            --danger: #ef4444;
            --danger-bg: rgba(239, 68, 68, 0.1);
            --success: #10b981;
            --warning: #f59e0b;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-lg: 0 25px 60px rgba(0, 0, 0, 0.5);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 30px var(--accent-glow);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            min-height: 100vh;
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        /* Subtle animated background grid */
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(59, 130, 246, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 70%, rgba(139, 92, 246, 0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 50%, rgba(16, 185, 129, 0.03) 0%, transparent 70%);
            animation: bgPulse 8s ease-in-out infinite alternate;
        }

        @keyframes bgPulse {
            0% {
                opacity: 0.7;
            }
            100% {
                opacity: 1;
            }
        }

        /* ============ NAVBAR ============ */
        .navbar {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(17, 24, 39, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            padding: 0 2rem;
            transition: var(--transition);
        }

        .navbar-inner {
            max-width: 1300px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            text-decoration: none;
        }

        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #3b82f6, #6366f1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
            align-items: center;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--text-primary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
            transition: width 0.3s ease;
        }
        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-cta {
            background: var(--accent);
            color: #fff !important;
            padding: 9px 20px;
            border-radius: 25px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
        }
        .nav-cta:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 22px rgba(59, 130, 246, 0.5);
            transform: translateY(-1px);
        }
        .nav-cta::after {
            display: none !important;
        }

        /* ============ MAIN CONTAINER ============ */
        .main-container {
            position: relative;
            z-index: 1;
            max-width: 1300px;
            margin: 0 auto;
            padding: 2rem;
        }

        /* ============ HERO ============ */
        .hero {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 3rem;
            padding: 3rem 0 4rem;
            flex-wrap: wrap;
        }

        .hero-content {
            flex: 1 1 450px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(59, 130, 246, 0.1);
            border: 1px solid rgba(59, 130, 246, 0.25);
            color: #60a5fa;
            padding: 6px 14px;
            border-radius: 25px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            letter-spacing: 0.01em;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: #60a5fa;
            border-radius: 50%;
            animation: dotBlink 1.5s ease-in-out infinite;
        }
        @keyframes dotBlink {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 6px #60a5fa;
            }
            50% {
                opacity: 0.3;
                box-shadow: 0 0 2px #60a5fa;
            }
        }
        .hero h1 {
            font-size: clamp(2.4rem, 5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 1.2rem;
        }
        .hero h1 .gradient-text {
            background: linear-gradient(135deg, #60a5fa, #a78bfa, #34d399);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero p {
            color: var(--text-secondary);
            font-size: 1.15rem;
            max-width: 500px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            border: none;
            text-decoration: none;
            transition: var(--transition);
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 8px 28px rgba(59, 130, 246, 0.35);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 12px 35px rgba(59, 130, 246, 0.5);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--border);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
        }

        /* Hero visual */
        .hero-visual {
            flex: 1 1 380px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-illustration {
            position: relative;
            width: 100%;
            max-width: 420px;
            aspect-ratio: 1 / 0.85;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }
        .hero-illustration::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.3), transparent 40%, transparent 60%, rgba(139, 92, 246, 0.25));
            z-index: -1;
            animation: borderGlow 4s ease-in-out infinite alternate;
        }
        @keyframes borderGlow {
            0% {
                opacity: 0.5;
            }
            100% {
                opacity: 1;
            }
        }
        .cloud-icons-stack {
            text-align: center;
            z-index: 1;
        }
        .cloud-icon-big {
            font-size: 5rem;
            animation: floatCloud 3s ease-in-out infinite;
            filter: drop-shadow(0 10px 25px rgba(59, 130, 246, 0.4));
        }
        @keyframes floatCloud {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-14px);
            }
        }
        .cloud-label {
            display: block;
            margin-top: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
        }
        .cloud-sub {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ============ SECTION TITLES ============ */
        .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 0.5rem;
        }
        .section-title p {
            color: var(--text-muted);
            font-size: 1rem;
        }

        /* ============ FEATURES GRID ============ */
        .features-section {
            padding: 2rem 0 4rem;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2rem 1.6rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: #2a3444;
            transform: translateY(-3px);
            box-shadow: var(--shadow-card), 0 0 40px rgba(59, 130, 246, 0.08);
        }
        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.2rem;
            background: rgba(59, 130, 246, 0.1);
            color: #60a5fa;
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .feature-card:nth-child(2) .feature-icon {
            background: rgba(139, 92, 246, 0.1);
            color: #a78bfa;
        }
        .feature-card:nth-child(3) .feature-icon {
            background: rgba(16, 185, 129, 0.1);
            color: #34d399;
        }
        .feature-card:nth-child(4) .feature-icon {
            background: rgba(245, 158, 11, 0.1);
            color: #fbbf24;
        }

        /* ============ STATS ROW ============ */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.5rem;
            padding: 2rem 0 4rem;
            text-align: center;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.5rem;
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: #2a3444;
            box-shadow: var(--shadow-card);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 0.3rem;
        }

        /* ============ LOGIN SECTION ============ */
        .login-section {
            padding: 2rem 0 4rem;
            display: flex;
            justify-content: center;
        }
        .login-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 2.5rem 2rem;
            width: 100%;
            max-width: 440px;
            box-shadow: var(--shadow-lg);
            position: relative;
            transition: var(--transition);
        }
        .login-card::before {
            content: '';
            position: absolute;
            inset: -1px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), transparent 50%, rgba(139, 92, 246, 0.15));
            z-index: -1;
            opacity: 0.7;
        }
        .login-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 0.3rem;
            letter-spacing: -0.02em;
        }
        .login-card .login-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .form-group {
            margin-bottom: 1.3rem;
            position: relative;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 0.4rem;
            color: var(--text-secondary);
            letter-spacing: 0.01em;
        }
        .form-group .input-wrapper {
            position: relative;
        }
        .form-group input {
            width: 100%;
            padding: 13px 16px;
            padding-right: 44px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius);
            background: var(--bg-secondary);
            color: var(--text-primary);
            font-size: 0.95rem;
            font-family: inherit;
            transition: var(--transition);
            outline: none;
        }
        .form-group input:focus {
            border-color: var(--border-focus);
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
        }
        .form-group input.input-error {
            border-color: var(--danger);
            box-shadow: 0 0 0 4px var(--danger-bg);
        }
        .form-group .input-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            pointer-events: none;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .form-group input:focus+.input-icon {
            color: var(--accent);
        }
        .form-group input.input-error+.input-icon {
            color: var(--danger);
        }
        .error-msg {
            color: var(--danger);
            font-size: 0.78rem;
            margin-top: 0.35rem;
            display: none;
            align-items: center;
            gap: 5px;
            font-weight: 500;
            animation: fadeInDown 0.25s ease;
        }
        .error-msg.visible {
            display: flex;
        }
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .btn-submit {
            width: 100%;
            padding: 14px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            border: none;
            background: var(--accent);
            color: #fff;
            letter-spacing: 0.02em;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(59, 130, 246, 0.3);
            position: relative;
            overflow: hidden;
        }
        .btn-submit:hover {
            background: var(--accent-hover);
            box-shadow: 0 12px 35px rgba(59, 130, 246, 0.45);
            transform: translateY(-1px);
        }
        .btn-submit:active {
            transform: scale(0.97);
            transition: transform 0.1s ease;
        }
        .btn-submit:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            pointer-events: none;
        }

        /* Loading spinner inside button */
        .btn-submit .spinner {
            display: none;
            width: 20px;
            height: 20px;
            border: 2.5px solid rgba(255, 255, 255, 0.3);
            border-top-color: #fff;
            border-radius: 50%;
            animation: spin 0.7s linear infinite;
            margin-right: 8px;
            vertical-align: middle;
        }
        .btn-submit.loading .spinner {
            display: inline-block;
        }
        .btn-submit.loading .btn-text {
            display: inline;
        }
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        /* Result message */
        .result-message {
            text-align: center;
            margin-top: 1.2rem;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            display: none;
            animation: fadeInDown 0.35s ease;
        }
        .result-message.visible {
            display: block;
        }
        .result-message.error {
            background: var(--danger-bg);
            color: #f87171;
            border: 1px solid rgba(239, 68, 68, 0.25);
        }

        /* ============ TESTIMONIALS / INFO BLOCKS ============ */
        .info-blocks {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            padding: 2rem 0 4rem;
        }
        .info-block {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .info-block:hover {
            border-color: #2a3444;
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .info-block .info-block-header {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .info-block .info-block-icon {
            font-size: 1.6rem;
        }
        .info-block h4 {
            font-weight: 600;
            font-size: 1.05rem;
            letter-spacing: -0.01em;
        }
        .info-block p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .info-block .tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 15px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(59, 130, 246, 0.1);
            color: #60a5fa;
            align-self: flex-start;
        }

        /* ============ FOOTER ============ */
        .footer {
            text-align: center;
            padding: 2rem;
            color: var(--text-muted);
            font-size: 0.85rem;
            border-top: 1px solid var(--border);
            position: relative;
            z-index: 1;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 768px) {
            .hero {
                flex-direction: column;
                text-align: center;
                padding: 2rem 0 3rem;
                gap: 2rem;
            }
            .hero p {
                max-width: 100%;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-illustration {
                max-width: 300px;
                aspect-ratio: 1 / 0.9;
            }
            .cloud-icon-big {
                font-size: 3.5rem;
            }
            .nav-links {
                gap: 1rem;
            }
            .nav-links a {
                font-size: 0.85rem;
            }
            .navbar {
                padding: 0 1rem;
            }
            .login-card {
                padding: 2rem 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .nav-links .hide-mobile {
                display: none;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .btn {
                padding: 11px 20px;
                font-size: 0.85rem;
            }
            .login-card {
                padding: 1.5rem 1.2rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .info-blocks {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .stat-number {
                font-size: 2rem;
            }
        }