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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-x: hidden;
}

.login-container {
    width: 100%;
    max-width: 420px;
    animation: fadeInUp 0.8s ease-out;
}

.login-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 
        0 25px 45px rgba(0, 0, 0, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1, #f9ca24, #ff9ff3);
    background-size: 300% 300%;
    animation: gradientShift 3s ease infinite;
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo h2 {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.5rem;
    font-weight: 300;
    margin: 0;
}

.error-message {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #fee2e2;
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    position: relative;
}

.input-group label {
    display: block;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.input-group input {
    width: 100%;
    padding: 1rem 1.25rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.input-group input:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.input-group.focused label {
    color: white;
    transform: translateY(-8px) scale(0.85);
}

.input-group.error input {
    border-color: rgba(239, 68, 68, 0.5);
}

.error {
    color: #fee2e2;
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: block;
}

.login-btn {
    background: linear-gradient(135deg, #ff6b6b, #4ecdc4);
    border: none;
    padding: 1.25rem 2rem;
    border-radius: 12px;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.login-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(255, 107, 107, 0.4);
}

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

.login-btn .arrow {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.login-btn:hover .arrow {
    transform: translateX(4px);
}

.footer-text {
    text-align: center;
    margin-top: 1.5rem;
}

.footer-text p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-text a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-text a:hover {
    color: #4ecdc4;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }
    
    .logo h1 {
        font-size: 3rem;
    }
}