body {
            background: #292e40;

            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            min-height: 100vh;
            position: relative;
            overflow-x: hidden;
        }

        /* Animated clouds */
        body::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 200%;
            height: 100%;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 400"><g opacity="0.15"><path d="M100,100 Q150,50 200,100 Q250,80 300,100 Q350,60 400,100 Q450,70 500,100 Q550,50 600,100 Q650,80 700,100 Q750,60 800,100 Q850,70 900,100 Q950,50 1000,100 Q1050,80 1100,100 Q1150,60 1200,100 L1200,0 L0,0 Z" fill="%23ffffff"/><path d="M0,150 Q50,100 100,150 Q150,130 200,150 Q250,110 300,150 Q350,120 400,150 Q450,100 500,150 Q550,130 600,150 Q650,110 700,150 Q750,120 800,150 Q850,100 900,150 Q950,130 1000,150 Q1050,110 1100,150 Q1150,120 1200,150 L1200,400 L0,400 Z" fill="%23ffffff"/></g></svg>');
            animation: clouds 80s linear infinite;
            pointer-events: none;
        }

        @keyframes clouds {
            from {
                transform: translateX(0);
            }

            to {
                transform: translateX(-50%);
            }
        }

        /* Floating airplane elements */
        body::after {
            content: "";
            position: absolute;
            top: 20%;
            right: 10%;
            width: 60px;
            height: 60px;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%23ffffff" stroke-width="2"><path d="M21 16v-6l-4-4H7l-4 4v6a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2z"/><path d="M7 8v8"/><path d="M15 8v8"/></svg>');
            background-size: contain;
            opacity: 0.1;
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {

            0%,
            100% {
                transform: translateY(0px) rotate(0deg);
            }

            50% {
                transform: translateY(-20px) rotate(5deg);
            }
        }

        .auth-card {
            border-radius: 24px;
            backdrop-filter: blur(20px);
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 20px 40px rgba(102, 126, 234, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.4s ease-in-out;
            position: relative;
            overflow: hidden;
        }

        .auth-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #667eea, #764ba2);
        }

        .auth-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 25px 50px rgba(102, 126, 234, 0.25);
        }

        .auth-logo-box {
            position: relative;
            margin-bottom: 1rem;
        }

        .auth-logo-box img {
            height: 100px;
            width: auto;
            filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.3));
        }

        .auth-logo-text h4 {
            font-weight: 700;
            color: #2d3748;
            font-size: 1.5rem;
            margin-bottom: 0.5rem;
        }

        .auth-logo-text p {
            color: #718096;
            font-size: 0.95rem;
            font-weight: 400;
        }

        .btn-theme {
            background: #292e40;
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.3s ease-in-out;
            position: relative;
            overflow: hidden;
        }

        .btn-theme::before {
            content: "";
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, #292e40, transparent);
            transition: left 0.5s;
        }

        .btn-theme:hover::before {
            left: 100%;
        }

        .btn-theme:hover {
            background: #292e40;
            transform: translateY(-2px);
            color: #fff;
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        .auth-page {
            max-width: 600px;
            margin: auto;
            padding: 2rem 1rem;
        }

        .flight-logo {
            display: inline-block;
            animation: logoFloat 3s ease-in-out infinite;
        }

        @keyframes logoFloat {

            0%,
            100% {
                transform: translateY(0px);
            }

            50% {
                transform: translateY(-5px);
            }
        }

        .form-control {
            border-radius: 12px;
            border: 2px solid #e2e8f0;
            transition: all 0.3s ease;
            padding: 11px 16px;
            font-size: 0.9rem;
            background: rgba(255, 255, 255, 0.8);
        }

        .form-control:focus {
            border-color: #292e40;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
            background: rgba(255, 255, 255, 1);
        }

        .auth-form-icon {
            background: #292e40;
            color: #fff;
            padding: 12px 16px;
            border-radius: 12px 0 0 12px;
            border: 2px solid transparent;
            border-right: none;
        }

        .input-group .form-control {
            border-radius: 0 12px 12px 0;
            border-left: none;
            height: 48px;
        }

        .input-group:focus-within .auth-form-icon {
            background: #292e40;
        }

        .alert {
            position: fixed;
            top: 20px;
            right: 20px;
            min-width: 280px;
            max-width: 400px;
            z-index: 1055;
            border-radius: 12px;
            padding: 14px 20px;
            color: #fff;
            font-weight: 500;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
            animation: slideInRight 0.5s ease-out, fadeOut 1s ease-in 2s forwards;
        }

        /* Success message — theme color */
        .alert-success {
            background: #292e40 !important;
            border: none;
        }

        /* Error message — red */
        .alert-danger {
            background: #e03131 !important;
            border: none;
        }

        @keyframes slideInRight {
            from {
                transform: translateX(100%);
                opacity: 0;
            }

            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        @keyframes fadeOut {
            from {
                opacity: 1;
                transform: translateX(0);
            }

            to {
                opacity: 0;
                transform: translateX(120%);
            }
        }

        /* Form animations */
        .form-group {
            animation: fadeInUp 0.6s ease-out;
            animation-fill-mode: both;
        }

        .form-group:nth-child(1) {
            animation-delay: 0.1s;
        }

        .form-group:nth-child(2) {
            animation-delay: 0.2s;
        }

        .form-group:nth-child(3) {
            animation-delay: 0.3s;
        }

        .form-group:nth-child(4) {
            animation-delay: 0.4s;
        }

        @keyframes fadeInUp {
            from {
                transform: translateY(30px);
                opacity: 0;
            }

            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        /* Loading animation for button */
        .btn-theme.loading {
            position: relative;
            color: transparent;
        }

        .btn-theme.loading::after {
            content: "";
            position: absolute;
            width: 20px;
            height: 20px;
            top: 50%;
            left: 50%;
            margin-left: -10px;
            margin-top: -10px;
            border: 2px solid #ffffff;
            border-radius: 50%;
            border-top-color: transparent;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        small.text-muted {
            color: #999 !important;
        }

        /* Additional flight-themed elements */
        .flight-particles {
            position: absolute;
            width: 100%;
            height: 100%;
            overflow: hidden;
            pointer-events: none;
        }

        .flight-particles::before,
        .flight-particles::after {
            content: "";
            position: absolute;
            width: 4px;
            height: 4px;
            background: rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            animation: particleFloat 15s linear infinite;
        }

        .flight-particles::before {
            top: 20%;
            left: 10%;
            animation-delay: 0s;
        }

        .flight-particles::after {
            top: 60%;
            right: 15%;
            animation-delay: 7s;
        }

        @keyframes particleFloat {
            0% {
                transform: translateY(100vh) translateX(0);
                opacity: 0;
            }

            10% {
                opacity: 1;
            }

            90% {
                opacity: 1;
            }

            100% {
                transform: translateY(-100px) translateX(50px);
                opacity: 0;
            }
        }

        /* Make form error messages prominent and aligned */
        .invalid-feedback {
            color: #e03131 !important;
            /* Red color */
            font-size: 0.9rem;
            font-weight: 500;
            margin-top: 6px;
            margin-left: 50px;
            /* Push right to align after icon */
            animation: fadeInError 0.3s ease-in-out;
        }

        /* Optional subtle fade-in effect for errors */
        @keyframes fadeInError {
            from {
                opacity: 0;
                transform: translateY(-5px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }