* {
    font-family: 'Noto Sans Thai', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

body::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    animation: float 15s infinite ease-in-out reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(10deg); }
}

.login-card {
    max-width: 440px;
    width: 100%;
    border: none;
    border-radius: 24px;
    backdrop-filter: blur(10px);
    background: rgba(255,255,255,0.95);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: slideUp 0.6s ease-out;
    position: relative;
    z-index: 10;
}

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

.login-card .card-body {
    padding: 2.5rem !important;
}

.login-card h1 {
    font-weight: 600;
    color: #667eea;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-card .form-label {
    font-weight: 500;
    color: #4a5568;
    margin-bottom: 0.5rem;
}

.login-card .form-control {
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.login-card .form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102,126,234,0.15);
    transform: translateY(-2px);
}

.login-card .input-group {
    border-radius: 12px;
    overflow: hidden;
}

.login-card .input-group .form-control {
    border-right: none;
}

.login-card .input-group .btn {
    border: 2px solid #e2e8f0;
    border-left: none;
    background: white;
    color: #718096;
    transition: all 0.3s ease;
}

.login-card .input-group .btn:hover {
    color: #667eea;
    background: #f7fafc;
}

.login-card .btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 12px;
    padding: 0.85rem;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102,126,234,0.4);
}

.login-card .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102,126,234,0.5);
}

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

.alert {
    border-radius: 12px;
    border: none;
    animation: slideDown 0.4s ease-out;
}

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

.text-muted {
    color: #718096 !important;
}

/* Loading animation */
.btn-primary.loading {
    position: relative;
    color: transparent;
}

.btn-primary.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}