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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #F2F2F7;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: white;
    border-radius: 12px;
    border: 1px solid #E5E5EA;
    padding: 48px 40px;
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: #000;
    margin-bottom: 8px;
}

.login-header p {
    font-size: 18px;
    color: #8E8E93;
}

.form-group {
    margin-bottom: 20px;
}

.login-input {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    border: 1px solid #E5E5EA;
    border-radius: 12px;
    transition: all 0.2s ease;
    background: white;
}

.login-input:focus {
    outline: none;
    border-color: #007AFF;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.login-input::placeholder {
    color: #C7C7CC;
}

.remember-me-inline {
    margin-bottom: 20px;
    text-align: left;
}

.remember-me-inline label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: #3C3C43;
    font-weight: 500;
}

.remember-me-inline input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #007AFF;
}

.remember-me-inline label:hover {
    color: #000;
}

.login-button {
    width: 100%;
    padding: 16px;
    background: #007AFF;
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.login-button:hover {
    background: #0051D5;
}

.login-button:active {
    transform: scale(0.98);
}

.login-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

.spinner.hidden {
    display: none;
}

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

.error-message {
    background: #FFEBEE;
    color: #D32F2F;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-top: 16px;
    text-align: center;
    border: 1px solid #FFCDD2;
}

.error-message.hidden {
    display: none;
}

@media (max-width: 480px) {
    .login-card {
        padding: 40px 24px;
    }

    .login-header {
        margin-bottom: 32px;
    }

    .login-header h1 {
        font-size: 28px;
    }

    .login-header p {
        font-size: 16px;
    }

    .login-input,
    .login-button {
        font-size: 16px;
    }
}