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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #ff6b9d 0%, #c06c84 50%, #f67280 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* Animated Hearts Background */
.hearts-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.heart {
    position: absolute;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.3);
    transform: rotate(-45deg);
    animation: float 15s infinite ease-in-out;
}

.heart::before,
.heart::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
}

.heart::before {
    top: -20px;
    left: 0;
}

.heart::after {
    top: 0;
    left: 20px;
}

.heart:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
    animation-duration: 12s;
}

.heart:nth-child(2) {
    left: 30%;
    animation-delay: 2s;
    animation-duration: 14s;
}

.heart:nth-child(3) {
    left: 50%;
    animation-delay: 4s;
    animation-duration: 16s;
}

.heart:nth-child(4) {
    left: 70%;
    animation-delay: 1s;
    animation-duration: 13s;
}

.heart:nth-child(5) {
    left: 90%;
    animation-delay: 3s;
    animation-duration: 15s;
}

@keyframes float {
    0% {
        top: 100%;
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        top: -10%;
        opacity: 0;
    }
}

/* Container */
.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

/* Login Box */
.login-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 50px 40px;
    border-radius: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.6s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateY(-30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.heart-icon {
    font-size: 80px;
    text-align: center;
    margin-bottom: 20px;
    animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    10%, 30% {
        transform: scale(1.1);
    }
    20%, 40% {
        transform: scale(0.9);
    }
}

h1 {
    color: #d63447;
    text-align: center;
    margin-bottom: 10px;
    font-size: 32px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.subtitle {
    color: #666;
    text-align: center;
    margin-bottom: 30px;
    font-size: 14px;
}

/* Form Styles */
.input-group {
    margin-bottom: 25px;
}

label {
    display: block;
    color: #d63447;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #ffc0cb;
    border-radius: 15px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #fff;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #ff6b9d;
    box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.1);
    transform: translateY(-2px);
}

/* Submit Button */
.submit-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #ff6b9d 0%, #d63447 100%);
    border: none;
    border-radius: 15px;
    color: white;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(214, 52, 71, 0.3);
    margin-top: 10px;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(214, 52, 71, 0.4);
}

.submit-btn:active {
    transform: translateY(-1px);
}

/* Message Styles */
.message {
    margin-top: 25px;
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    font-weight: 500;
    display: none;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 2px solid #c3e6cb;
    display: block;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 2px solid #f5c6cb;
    display: block;
}

/* Responsive Design */
@media (max-width: 500px) {
    .login-box {
        padding: 40px 25px;
    }
    
    h1 {
        font-size: 26px;
    }
    
    .heart-icon {
        font-size: 60px;
    }
}