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

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

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.05)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.05)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.03)"/><circle cx="20" cy="60" r="0.5" fill="rgba(255,255,255,0.03)"/><circle cx="80" cy="40" r="0.5" fill="rgba(255,255,255,0.03)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    pointer-events: none;
}

.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 20s infinite linear;
}

.floating-shape:nth-child(1) {
    width: 80px;
    height: 80px;
    left: 10%;
    animation-delay: 0s;
}

.floating-shape:nth-child(2) {
    width: 120px;
    height: 120px;
    left: 80%;
    animation-delay: 5s;
}

.floating-shape:nth-child(3) {
    width: 60px;
    height: 60px;
    left: 50%;
    animation-delay: 10s;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

.login-container {
    background: rgba(255, 255, 255, 0.28);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 40px;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: relative;
    animation: slideInUp 0.8s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.brand-section {
    text-align: center;
    margin-bottom: 40px;
}

.brand-icon {
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.brand-icon i {
    font-size: 2.5rem;
    color: #667eea;
}

.brand-title {
    color: white;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.brand-subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    font-weight: 400;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-label {
    color: white;
    font-weight: 500;
    margin-bottom: 8px;
    display: block;
    font-size: 0.9rem;
}

.form-control {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    padding: 15px 20px 15px 50px;
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 0.25rem rgba(255, 255, 255, 0.25);
    color: white;
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.input-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.1rem;
    z-index: 10;
}

.form-check {
    margin: 20px 0;
}

.form-check-input {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.form-check-input:checked {
    background-color: #667eea;
    border-color: #667eea;
}

.form-check-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
}

.btn-login {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 12px;
    padding: 15px;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    width: 100%;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    color: white;
}

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

.btn-login::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

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

.divider {
    text-align: center;
    margin: 30px 0;
    position: relative;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.3);
}

.divider span {
    background: rgba(255, 255, 255, 0.25);
    color: rgba(255, 255, 255, 0.8);
    padding: 0 20px;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
    border-radius: 20px;
}

.register-link {
    text-align: center;
    margin-top: 25px;
}

.register-link a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.register-link a:hover {
    color: white;
    border-bottom-color: white;
}

.alert {
    background: rgba(220, 53, 69, 0.2);
    border: 1px solid rgba(220, 53, 69, 0.3);
    color: white;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    margin-bottom: 20px;
}

.alert-success {
    background: rgba(25, 135, 84, 0.2);
    border-color: rgba(25, 135, 84, 0.3);
}

.text-validation-summary {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    margin-top: 5px;
}

.field-validation-error {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.8rem;
    margin-top: 5px;
    display: block;
}

@media (max-width: 576px) {
    .login-container {
        margin: 20px;
        padding: 30px 25px;
    }

    .brand-title {
        font-size: 1.5rem;
    }
}