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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 50%, #e0e7ff 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #374151;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.login-header-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
    margin-bottom: 1rem;
}

.login-header h1 {
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(135deg, #1f2937, #6b7280);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.login-header p {
    font-size: 1rem;
    color: #6b7280;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #374151;
}

.form-group input {
    width: 100%;
    height: 3rem;
    padding: 0 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s;
}

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

.btn {
    width: 100%;
    height: 3rem;
    border: none;
    border-radius: 8px;
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 0.5rem;
}

.btn:hover {
    background: linear-gradient(135deg, #1d4ed8, #4338ca);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.error-message {
    color: #dc2626;
    font-size: 0.875rem;
    margin-top: 1rem;
    text-align: center;
    display: none;
}

.icon {
    width: 24px;
    height: 24px;
    fill: white;
}

.css-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: none;
    margin: 0 auto;
    position: absolute;
    left: 0;
    right: 0;
}

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

.btn-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    height: 100%;
}

.footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.875rem;
    color: #6b7280;
}