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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Background Elements */
.bg-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(30, 41, 59, 0.8) 50%, rgba(51, 65, 85, 0.9) 100%),
        url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
    animation: slowZoom 20s ease-in-out infinite;
}

.bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(147, 51, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    z-index: 1;
}

.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
}

.shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.shape:nth-child(1) {
    width: 120px;
    height: 120px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape:nth-child(2) {
    width: 80px;
    height: 80px;
    top: 20%;
    right: 15%;
    animation-delay: 5s;
}

.shape:nth-child(3) {
    width: 100px;
    height: 100px;
    bottom: 15%;
    left: 20%;
    animation-delay: 10s;
}

.shape:nth-child(4) {
    width: 60px;
    height: 60px;
    bottom: 25%;
    right: 25%;
    animation-delay: 15s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(1deg); }
    50% { transform: translateY(10px) rotate(-1deg); }
    75% { transform: translateY(-10px) rotate(0.5deg); }
}

@keyframes slowZoom {
    0%, 100% { 
        transform: scale(1);
        filter: brightness(0.8) contrast(1.1);
    }
    50% { 
        transform: scale(1.05);
        filter: brightness(0.9) contrast(1.2);
    }
}

/* Main Container */
.login-container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 380px;
    margin: 1.5rem;
}

/* Logo Section */
.logo-section {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    width: 180px;
    height: 180px;
    margin: 0 auto 1rem;
    filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.3));
}

.company-name {
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.company-tagline {
    color: #94a3b8;
    font-size: 0.875rem;
    font-weight: 400;
}

/* Login Form */
.login-form {
    background: rgba(255, 255, 255, 0.05);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.form-title {
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1.5rem;
}

/* Form Groups */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    color: #e2e8f0;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 0.875rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    color: #ffffff;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.form-group input::placeholder {
    color: #64748b;
}

.form-group input:focus {
    outline: none;
    border-color: #3b82f6;
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Login Button */
.btn-login {
    width: 100%;
    padding: 0.75rem;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 1.25rem;
}

.btn-login:hover {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    transform: translateY(-1px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

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

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid transparent;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.2);
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: #86efac;
    border-color: rgba(34, 197, 94, 0.2);
}

/* Back Link */
.back-link {
    text-align: center;
    margin-top: 1.5rem;
}

.back-link a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.back-link a:hover {
    color: #e2e8f0;
}

/* Demo Credentials */
.demo-credentials {
    margin-top: 1.5rem;
    padding: 1.25rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    text-align: center;
}

.demo-credentials h4 {
    color: #e2e8f0;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.demo-credentials p {
    color: #94a3b8;
    font-size: 0.875rem;
    margin: 0.5rem 0;
}

.demo-credentials code {
    background: rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Responsive Design */
@media (max-width: 480px) {
    .login-container {
        margin: 1rem;
    }
    
    .login-form {
        padding: 2rem;
    }
    
    .company-name {
        font-size: 1.75rem;
    }
    
            .logo {
            width: 160px;
            height: 160px;
        }
}

/* Loading State */
.btn-login.loading {
    position: relative;
    color: transparent;
}

.btn-login.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}