:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --light-gradient: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

body {
    background: var(--primary-gradient);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    max-width: 450px;
    width: 100%;
    animation: slideInUp 0.6s ease-out;
}

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

.login-header {
    background: var(--primary-gradient);
    color: white;
    padding: 1rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.login-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 500%;
    height: 500%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: shimmer 15s ease-in-out infinite;
    filter:blur(50px);
}

@keyframes shimmer {
    0%, 100% { transform: translateX(-50%) translateY(-50%) rotate(0deg); }
    50% { transform: translateX(-50%) translateY(-50%) rotate(360deg); }
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
}

.login-header p {
    opacity: 0.9;
    margin: 0;
    position: relative;
    z-index: 2;
    font-family: 'Zen Loop', sans-serif;
    font-size: 2em;
}

.login-body {
    padding: 2.5rem;
}

.form-floating {
    margin-bottom: 1.5rem;
}

.form-floating > .form-control {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 1rem 0.75rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
}

.form-floating > .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    background: white;
}

.form-floating > label {
    color: #6c757d;
    font-weight: 500;
}

.btn-login {
    background: var(--primary-gradient);
    border: none;
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 0.8rem 2rem;
    border-radius: 12px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-login::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;
}

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

.btn-login:hover {
    color:#fff;
    transform: scale(1.05);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
    text-shadow:0 0 9px rgba(255,255,255,0.63);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.alert {
    border: none;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.alert-success {
    background: linear-gradient(135deg, #d1f2eb 0%, #a7f3d0 100%);
    color: #065f46;
}

.alert-warning {
    background: linear-gradient(135deg, #fef3cd 0%, #fde68a 100%);
    color: #92400e;
}

.divider {
    position: relative;
    text-align: center;
    margin: 2rem 0;
    color: #6c757d;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #dee2e6, transparent);
}

.divider span {
    background: white;
    padding: 0 1rem;
    font-size: 0.9rem;
}

.footer-links {
    text-align: center;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.footer-links a:hover {
    background: var(--light-gradient);
    transform: translateY(-1px);
}

.language-switcher {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 10;
}

.flag-svg { height:1.25em; width:auto; }

.floating-icons {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.floating-icon {
    position: absolute;
    color: rgba(255, 255, 255, 0.1);
    font-size: 2rem;
    animation: float 6s ease-in-out infinite;
}

.floating-icon:nth-child(1) { top: 20%; left: 10%; animation-delay: -1s; }
.floating-icon:nth-child(2) { top: 60%; left: 80%; animation-delay: -3s; }
.floating-icon:nth-child(3) { top: 80%; left: 20%; animation-delay: -5s; }

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

@media (max-width: 576px) {
    .login-body {
        padding: 1.5rem;
    }

    .login-header {
        padding: 1.5rem;
    }

    .login-header h1 {
        font-size: 1.5rem;
    }
}