:root {
            --primary-color: #10b981;
            --primary-hover: #059669;
            --accent: #3b82f6;
            --background: linear-gradient(135deg, #dbeafe 0%, #f0fdf4 100%);
            --card-bg: #ffffff;
            --text-color: #1f2937;
            --secondary-text: #6b7280;
            --error: #ef4444;
            --success: #22c55e;
            --input-bg: #f9fafb;
            --input-focus: rgba(16, 185, 129, 0.2);
            --button-gradient: linear-gradient(90deg, #10b981 0%, #3b82f6 100%);
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background: var(--background);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--text-color);
        }

        .navbar {
            background: var(--card-bg);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
            padding: 1rem 2rem;
            width: 100%;
            position: fixed;
            top: 0;
            z-index: 1000;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 600;
        }

        .logo .bracket,
        .logo .bracket1 {
            color: var(--text-color);
            font-weight: 700;
        }

        .logo .dev {
            color: var(--primary-color);
        }

        .logo .sow {
            color: var(--accent);
        }

        .logo .bracket1::after {
            content: "_";
            animation: blink 1s infinite;
        }

        @keyframes blink {
            0%, 50%, 100% { opacity: 1; }
            25%, 75% { opacity: 0; }
        }

        .navbar h4 {
            font-weight: 500;
            color: var(--secondary-text);
        }

        /* Signup Container */
        .signup-container {
            background: var(--card-bg);
            padding: 2.5rem 2rem;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            width: 100%;
            max-width: 650px;
            margin: 8rem auto 2rem;
            animation: fadeIn 0.5s ease-in-out;
            position: relative;
            z-index: 1;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .signup-container:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .signup-container h2 {
            text-align: center;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .signup-container .subtitle {
            text-align: center;
            color: var(--secondary-text);
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }

        /* Horizontal form */
        .form-horizontal {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
        }

        .form-horizontal .form-group {
            flex: 1 1 calc(50% - 1.2rem);
            position: relative;
        }

        .google-btn {
    display:inline-block;
    background:#fff;
    border:1px solid #ccc;
    border-radius:4px;
    padding:10px 20px;
    font-weight:500;
    color:#444;
    text-decoration:none;
    box-shadow:0 2px 3px rgba(0,0,0,0.1);
    transition:0.2s;
}
.google-btn:hover {
    background:#f7f7f7;
}


        .signup-container input {
            width: 100%;
            padding: 0.85rem 1rem;
            border: 1px solid #d1d5db;
            border-radius: 10px;
            font-size: 0.95rem;
            background: var(--input-bg);
            transition: all 0.3s ease;
            box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
        }

        .signup-container input:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 10px var(--input-focus);
            outline: none;
        }

        .form-group i {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: #9ca3af;
            transition: color 0.2s ease;
        }

        .form-group i:hover {
            color: var(--accent);
        }

        .signup-container input:invalid:focus {
            border-color: var(--error);
            box-shadow: 0 0 8px rgba(239, 68, 68, 0.2);
        }

        .signup-container button {
            width: 100%;
            padding: 0.9rem;
            background: var(--button-gradient);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .signup-container button:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }

        .signup-container a {
            display: block;
            text-align: center;
            margin-top: 1rem;
            color: var(--accent);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }

        .signup-container a:hover {
            color: #2563eb;
            text-decoration: underline;
        }

        .message, .error {
            text-align: center;
            padding: 0.85rem;
            border-radius: 10px;
            margin-bottom: 1rem;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .message {
            background: rgba(34, 197, 94, 0.1);
            color: var(--success);
        }

        .error {
            background: rgba(239, 68, 68, 0.1);
            color: var(--error);
        }

        /* USP Section - Sliding Card */
        .usp-section {
            background: var(--card-bg);
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            z-index: 900;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            overflow: hidden;
            position: relative;
        }

        .usp-section:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
        }

        .usp-slides {
            position: relative;
            width: 100%;
            height: 100%;
            overflow: hidden;
        }

        .usp-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            padding: 2rem;
            opacity: 0;
            transform: translateX(100%);
            transition: opacity 0.5s ease, transform 0.5s ease;
            text-align: center;
        }

        .usp-slide.active {
            opacity: 1;
            transform: translateX(0);
        }

        .usp-slide.prev {
            transform: translateX(-100%);
        }

        .usp-slide .icon {
            font-size: 2.25rem;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }

        .usp-slide h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-color);
        }

        .usp-slide p {
            font-size: 0.9rem;
            color: var(--secondary-text);
            line-height: 1.5;
        }

        .usp-dots {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin-top: 1rem;
            padding-bottom: 1rem;
        }

        .usp-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #d1d5db;
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .usp-dot.active {
            background: var(--primary-color);
        }

        #strengthBar {
            height: 6px;
            border-radius: 4px;
            background: #d1d5db;
            margin-top: 6px;
        }

        #strengthBar span {
            display: block;
            height: 100%;
            border-radius: 4px;
            transition: width 0.3s ease, background 0.3s ease;
        }

        #strengthText {
            font-size: 0.75rem;
            margin-top: 4px;
            color: #6b7280;
        }

        #emailStatus {
            font-size: 0.8rem;
            margin-top: 4px;
            color: #ef4444;
        }

        /* Large Screens (≥1024px) */
        @media (min-width: 1024px) {
            .signup-container {
                max-width: 650px;
                padding: 2.5rem 2rem;
                margin-right: 400px;
            }

            .form-horizontal {
                flex-direction: row;
                gap: 1.2rem;
            }

            .form-horizontal .form-group {
                flex: 1 1 calc(50% - 1.2rem);
            }

            .usp-section {
                position: fixed;
                top: 140px;
                right: 2rem;
                width: 350px;
                height: 280px;
            }

            .usp-slide {
                padding: 2rem;
            }

            .usp-slide h3 {
                font-size: 1.5rem;
            }

            .usp-slide p {
                font-size: 1rem;
            }

            .usp-slide .icon {
                font-size: 2.5rem;
            }

            .navbar {
                padding: 1.5rem 3rem;
            }

            .logo {
                font-size: 1.75rem;
            }
        }

        /* Small Screens (≤768px) */
        @media (max-width: 768px) {
            .navbar {
                flex-direction: column;
                gap: 0.5rem;
                padding: 1rem;
            }

            .logo {
                font-size: 1.25rem;
            }

            .navbar h4 {
                font-size: 0.9rem;
            }

            .signup-container {
                margin: 6rem auto 1rem;
                width: 90%;
                padding: 2rem 1.5rem;
            }

            .signup-container h2 {
                font-size: 1.5rem;
            }

            .signup-container .subtitle {
                font-size: 0.85rem;
            }

            .form-horizontal {
                flex-direction: column;
            }

            .form-horizontal .form-group {
                flex: 1 1 100%;
            }

            .usp-section {
                position: static;
                width: 90%;
                margin: 1rem auto;
                height: auto;
            }

            .usp-slide {
                padding: 1.5rem;
                position: relative;
            }

            .usp-slide h3 {
                font-size: 1.125rem;
            }

            .usp-slide p {
                font-size: 0.85rem;
            }

            .usp-slide .icon {
                font-size: 2rem;
            }
        }

        /* Extra Small Screens (≤480px) */
        @media (max-width: 480px) {
            .signup-container {
                padding: 1.5rem 1rem;
                margin-top: 5rem;
            }

            .signup-container h2 {
                font-size: 1.25rem;
            }

            .signup-container .subtitle {
                font-size: 0.8rem;
            }

            .signup-container input {
                font-size: 0.9rem;
                padding: 0.75rem;
            }

            .signup-container button {
                font-size: 0.9rem;
                padding: 0.8rem;
            }

            .usp-section {
                padding: 0;
            }

            .usp-slide {
                padding: 1rem;
            }

            .usp-slide h3 {
                font-size: 1rem;
            }

            .usp-slide p {
                font-size: 0.8rem;
            }

            .usp-slide .icon {
                font-size: 1.75rem;
            }
        }