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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow: hidden;
    position: relative;
}

.background {
    position: fixed;
    width: 100vw;
    height: 100vh;
    top: 0;
    left: 0;
    z-index: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out;
}

.shape:nth-child(1) {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.shape:nth-child(2) {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    bottom: -10%;
    right: -10%;
    animation-delay: -7s;
}

.shape:nth-child(3) {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -50px) scale(1.1);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

.container {
    position: relative;
    z-index: 1;
    animation: slideIn 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }

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

.login-form {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 50px 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 420px;
    max-width: 90vw;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.developer-name {
    font-size: 24px;
    color: #667eea;
    text-align: center;
    margin-bottom: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    animation: flashFly 4s ease-in-out infinite;
    text-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

@keyframes flashFly {
    0% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: brightness(1);
    }

    10% {
        opacity: 1;
        filter: brightness(2);
    }

    20% {
        opacity: 0.8;
        transform: translateY(-30px) scale(1.1);
        filter: brightness(1.5);
    }

    30% {
        opacity: 0;
        transform: translateY(-100px) scale(0.5) rotate(10deg);
        filter: brightness(3);
    }

    50% {
        opacity: 0;
        transform: translateY(-150px) scale(0.3) rotate(20deg);
    }

    70% {
        opacity: 0;
        transform: translateY(100px) scale(0.3) rotate(-20deg);
    }

    80% {
        opacity: 0.5;
        transform: translateY(30px) scale(0.8) rotate(-10deg);
        filter: brightness(2);
    }

    90% {
        opacity: 0.8;
        transform: translateY(10px) scale(0.95);
        filter: brightness(1.5);
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: brightness(1);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

.title {
    font-size: 32px;
    color: #333;
    text-align: center;
    margin-bottom: 10px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 2s ease-in-out infinite;
}

@keyframes titleGlow {

    0%,
    100% {
        filter: brightness(1);
    }

    50% {
        filter: brightness(1.2);
    }
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 35px;
    font-size: 14px;
}

.input-group {
    margin-bottom: 25px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 15px;
    width: 20px;
    height: 20px;
    color: #667eea;
    pointer-events: none;
    transition: all 0.3s ease;
}

.input-wrapper input {
    width: 100%;
    padding: 15px 15px 15px 50px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: white;
    color: #333;
}

.input-wrapper input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.input-wrapper input:focus+.input-icon {
    color: #764ba2;
    transform: scale(1.1);
}

.toggle-password {
    position: absolute;
    right: 15px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
}

.toggle-password:hover {
    transform: scale(1.1);
}

.eye-icon {
    width: 20px;
    height: 20px;
    color: #667eea;
    stroke-width: 2;
}



.error-message {
    color: #f5576c;
    font-size: 13px;
    margin-bottom: 15px;
    text-align: center;
    min-height: 20px;
    font-weight: 500;
    animation: shake 0.5s ease;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

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

.submit-btn.loading {
    pointer-events: none;
}

.submit-btn.loading .btn-text {
    opacity: 0;
}

.submit-btn.loading .loader {
    display: block;
}

.loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.footer-links {
    margin-top: 25px;
    text-align: center;
}

.link {
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    position: relative;
}

.link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s ease;
}

.link:hover::after {
    width: 100%;
}

.link:hover {
    color: #764ba2;
}

.success-message {
    color: #43e97b;
    font-size: 13px;
    margin-bottom: 15px;
    text-align: center;
    min-height: 20px;
    font-weight: 500;
    animation: fadeIn 0.5s ease;
}

.footer-links p {
    color: #666;
    font-size: 14px;
}

@media (max-width: 480px) {
    .login-form {
        padding: 40px 30px;
    }

    .title {
        font-size: 28px;
    }
}